Waching daily Oct 17 2018

Hey, interested in a ride on the star ferry?

Sure!

For more infomation >> Hong Kong Star Ferry // 天星小輪 🇭🇰 - Duration: 3:46.

-------------------------------------------

SYNC 3 | Yeni Özellikleri Nasıl Kullanırsınız? | Ford TR - Duration: 1:57.

For more infomation >> SYNC 3 | Yeni Özellikleri Nasıl Kullanırsınız? | Ford TR - Duration: 1:57.

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Python Tutorials - Quick Sort | Example | Introduction | Last Element As Pivot - Duration: 23:19.

Hello Guys and welcome to Python programming tutorials by Amuls Academy.

Today in this tutorial we are discussing about the Quicksort algorithm, in this video series

we already discussed about the Bubble sort and selection Sort algorithm for that i will

give you the link in the description box.

So now Quicksort algorithm is also called as "partition exchange sort" algorithm it

is developed by Tony hoare in 1959 and published in 1961 so it is one of the commonly used

sorting algorithm.

Quicksort algorithm when implemented well it can be about 2 or 3 times faster than the

merge sort and heapsort.

I guess that's why the name Quicksort.

So quick sort is the comparison sort algorithm so here also we will compare the values, to

rearrange the list we will compare the values.

Next in_place algorithm so that is nothing but it may require small additional amount

of memory to perform the sorting but it is the inplace sorting.

And next is unstable algorithm that is nothing but the relative order of equal sort item

is not preserved like, if you are sorting a list and it contains the duplicate values

the order they will appear in the input may not be the same in the output ok.so next it

is the recursive algorithm.

And next this Quicksort is the divide and conquer type of algorithm, So divide and conquer

is nothing but in this we will divide a problem into sub problem then we will solve that ok.

So in the divide and conquer rule there will be three steps, first one is divide, second

one is conquer, third one is combine.

So in the devide step we will divide the problem into subproblems ok so in the case of list

we will divide the list into sublist.

In the second Step, that is the conquer step we will find out the solution for the sub

list or sub problem recursively.

In the third step in the combine step we will combine the solution for these sublist or

sub problem to problem ok.

so as I said Quicksort also divide and conquer type of algorithm so in the first step in

the divide step first we will rearrange the list and we will divide the list based on

the "pivot element".

so "pivot" element is nothing but an element which will divide the list and we will divide

the list in such a way that the elements which are smaller than the pivot element will be

present left to the "pivot" element and the element which are greater than "pivot" element

will be present at the right of the pivot element ok.

so we will rearrange the list and we'll devide our list using "pivot" element, so how to

select pivot element we will discuss later.

Ans In the second step in the conquer step we will find out the solution for sub list

recursively.

And here third step is not required in the quick sort algorithm, no need to combine the

solution for sub problem to problem ok so we won't do any combining here.

so I talked about the "pivot" element right, we will divide the list using "pivot" element

then what is this and how to select this right,?

"pivot" element is just an element in the list ok if you ask how to select that then

you can choose the first element as the "pivot" element or you can choose the last element

of the list as the "pivot" element or you can select a random element or median of three

values that is first middle and last ok. so if you search for the quick sort algorithm,

ok in Google or YouTube in the most of the example you can see either first element or

the last element is the "pivot" element, so this is the easiest way to implement but when

sorted list is given or reverse sorted list is given this is the bad choice because we'll

select minimum or maximum value as the "pivot", after partitioning the list either left side

or right side will be completely empty ok. so when the sorted list or reverse sorted

list is given this is the bad choice so in that case we can go for the random element

we can choose random element as "pivot" element or we can go for the median of 3 values OK

so the selection of pivot element is very important it is entirely depend on the type

of input ok.

ok next we will take one example, so i took a list called "a" and these are all the elements.

I want to sort them in the ascending order.

So for that the first step in the Quicksort algorithm is selecting the pivot element ok,

so as i said we can select the last element or first element or random element or median

of 3 values.

so here first I'll take the last element as my pivot element ok.

so this is my "pivot" element, so next step is i need to find out the original place of

this "pivot" element that is 17.

so when i arrange number in the ascending order what is the original place of 17 ,i

need to find out it now.

so for that what i need to do is, i need to place all the smaller values in the left side

of the "pivot" value and i want to place all the bigger value to the right side of the

"pivot" value.

So to do this we need to compare all the values with "pivot" value, so for that i need two

more variables so here i'll take one variable called "left" and it will point here, so the

first element of the list and here i'll take next value as "right" it will point last but

one value because here last value is "pivot" value, here we are comparing the values with

the pivot value, so i don't want to compare this 17 with 17 so that's why i took "right"

from here.

So I'll take the index 0 2 3 4 and 5 ok, so "right" is in 4th index.

so now we will begin from the "left" ok so we will start to compare the values with the

"pivot" value.

so while comparing the values we need to follow few rules ok so that is this rules.

first one is always the "left" index value should be less than or equal to "right" ok

if "left" value become greater than "right" value then i need to stop ok here this first

condition and next is if this condition is true then i need to check the "left" value

that is the first value, whatever the value present in the left index is less than or

equal to "pivot" value, if this condition become false then I need to stop.

and I will go to the next condition that is this condition ok here also I'll check the

value present in the right index should be greater than or equal to "pivot", if not then

I need to stop.

we need to follow these three rules.

so here first I'll take the "left" value, so now initially left value is 0 and "right

value" is 4 right, so I'll write down that so now first I will check the first condition

whether the "left is less than or equal to right", yes because left value 0 right value

is 4 and "0 is less than 4" OK so I can go for the next condition.

so here the next condition is i need to check the first value which is present in the left

index whether it is less than or equal to "pivot" value that is nothing but i need to

check whether "14 is less than or equal to 17" ok

if this condition is true then no need to do anything, I need to move to the next value,

I need to compare next value with "pivot" , because i want smaller value in the left

side ok if it is become false then i need to stop ok and here in this case we can see

"14 is less than 17" ok so this condition become true So what I need to do go to the

next value and compare that with the pivot value ok.

so now this will be my left value, here left index become one, so now i will check "whether

25 is less than or equal to 17", ok so if it is true move to the next value, not stop.

we can see, "25 is greater than 17" ok so this condition become false, so i need to

stop here.

so here i will stop that ok so now i will move to the this right condition.

so here in the right, first I'll check whether "left is less than or equal to right" yes

it is because "one is less than 4" OK so next i will go to the right condition, that is

this.

This condition ok so here the value present in the right index should be greater than

or equal to "pivot" value ok so I'll check "a" of right, the value present in the right

index is greater than or equal to 17, so here first we can see the value is 1, so "1 is

greater than or equal to 17", if true then move to the next value False stop.

so it is false right because "one is less than 17", it is not greater than 17 so I need

to stop here.

ok so in the left side we stopped for a value because we got a value which is greater than

the "pivot" value, in the right side we got a value which is less than the "pivot" value.

Now what we need to do, we need to swap the value present in the left index and right

index because here we want all the smaller number in the left side, all the bigger number

in the right side ok so that's why we need to swap them now.

so I will swap 1 and 25, so, 1 will come here and 25 will go here ok now again we need to

check from the beginning, so here we will start from the left side so first here we

can see the value 1, so I'll check whether "1 is smaller than or equal to 17" Yes, if

yes then i need to move towards the next value right so left will point here now here left

value become 2 ok so now again I'll check whether the value present in the left index

is smaller than or equal to "pivot" value, no it is not, because "100 is greater than

17" right, so I need to stop here and I'll move to the right side so I'll check whether

"25 is greater than or equal to 17" YES it is, so i will go to the next value ok so right

will point here now.

so right value become 3 now ok so now i will check whether this value is greater than or

equal to "pivot" value "14 is greater than or equal to pivot value", no it is not.

Here this value 14 is smaller than 17, so I need to stop so now we got the two values

in the left side we got a value which is greater than the pivot value and in the right side

we got a value which is smaller than the pivot value so I need to swap 100 and 14 now.

so the value present in the left index and right index so 14 will come here and 100 will

go here ok.

so now again we will start from the beginning, we will check whether left is less than or

equal to right, so before checking each value with the pivot value you need to check this

condition ok left should be less than or equal to right, here it is true because left value

is 2, right value is 3, so left is less then right now.

so I'll check whether "14 is less than or equal to 17" YES it is, so I'll move to the

next value So now left will point here, so now i need to check whether "hundred is less

than or equal to 17" no it is not right, 100 is bigger value so i need to stop here.

Here I am stopping this left index now I'll move to the right, here left Intex is 3 now,

so before checking the right value i need to check whether left is less than or equal

to right, here left and right are equal both are three now ok, that's ok the condition

is true now.

so it will check whether "100 is greater than or equal to 17", yes it is right 100 is a

greater value.

so I need to move to the next value so right will move to the this value so now, right

become 2 ok, so next to check the next condition whether "14 is greater than 17", i need to

first check this condition that is whether "left is less than or equal to right" No it

is not, left become greater than Right, Left value is 3, right value is 2 ok so if this

happens i need to stop everything ok now i need to stop, when a left value crosses the

right value that means we got the actual position of pivot value now so, so to place that in

the correct position we need to do is we need to swap now ok pivot value and the value present

in the left index ok, so why because when we take last element as pivot element ok so

then we need to swap pivot and left index if you take first element as the pivot ok

if you take first element as pivot then in that case you need to swap pivot and the value

present in the right index ok you need to remember this, here we took the last value

of list as pivot value here we can see that's why i need to swap pivot and left index value.

Here left index value is 100 and pivot is 17, so i need to swap these two.

ok so here we got the original position of the pivot value that is 17, so that is nothing

but 17 is sorted here now, 17 is present in it correct position that is nothing but, if

i sort this number in the ascending order like 1 14 14 17 25 100 right, this is the

correct order so if i take 0 1 2 3 17 should be present in the third index so here we can

see it is present, that means 17 is sorted, this is not sorted and this is not sorted,

the element present left side and right side of the pivot element is not sorted but 17

is sorted here now, ok based on that now we will sort all the other elements also.

here if you observe then we can see the element which are present in the left side of 17 are

smaller values and the elements which are present in the right side of the pivot value

are the greater than the pivot value right,? so now what we need to do is, we need to divide

the list.

so as i said it is based on the divide and conquer method, so here we will divide the

list based on this pivot element ok, so here we need to divide like this, first is 14 and

1 and 14 ok this is one sublist, Next is 25 and 100 OK.

Here 17 is sorted right.

So we need to solve this sublist separately so we will apply same method OK.

We will take the last element as the pivot and we'll search the correct position of that

pivot element, so we will repeat the same step so we will do this recursively ok.

So here we will take 14 as pivot value now so this will be left value this will be right

value.

right?

so first I'll check whether "14 is less than or equal to 14", that is this value is less

than or equal to 14 yes it is, so I'll move one position next.

so now left will point here, so again i will check whether "1 is less than or equal to

14" yes it is true.

So again I'll move to the next value so it will point Here.

so now here we can see left value is cross the right value, here right value is 1 left

value is 2.

So left is greater than right so I need to stop.

Now i need to swap the value present in the left index and pivot value right,

so both are same here because left index value is also 14 and the pivot value is also same

so we need to swap 14 with the 14 so we'll get 14 only so here we will get the same list

ok.

so if i divide this list now based on this pivot value then we will get 14 and 1.

We will get only one sub list because here there are no elements present at the right

of the pivot element right, so we'll get this sublist.

So now again we need to find out the same method that is i need to take the last element

as pivot and i need to find out the original position of that pivot element, then i need

to divide the list ok.

So here 1 is the pivot value, so this will be left and this will be right because only

two values are present right?, so this is the pivot value.

So first I'll check whether "14 is less than or equal to 1" no it is not, right 14 is greater

than 1, so i'll stop that and I'll go to the right side i will check whether "14 is greater

than or equal to 1" yes it is right, 14 is greater than 1.

so I need to move to the right towards the next value so here right will point towards

here so -1 index okay so now we can see the left value is greater than right.

right value is -1 left value is 0, so left is greater than right so I need to stop and

I need to swap the value present in the left index and Pivot ok.

that is nothing but i need to swap 14 and 1, ok here if i swap that it will become 1

and 14 right.

so here 1 was the pivot value so if we divide this we will get a single list called 14 which

contains only one element Ok so if a single element is present that means it is sorted

right, so it will return 14 here so we'll get 1 and 14 this will return to here.

As i said we will do this operation recursively so it will return the result to the previous

function so this result will be returned to here, so this is nothing but this part is

sorted and we will get 1 14 and 14 and 17 because 17 is also sorted.

We will get this now ok.

so next we will move to the next so we'll move here, so here first I'll take 100 as

the pivot value and this is left and this is right and I'll check whether "left 25 is

less than or equal to 100" yes it is true So left will move here .

so now left comes here, so now you can see right value is less than left Value, so we

need to swap and I need to swap 100 with the 100, because 100 is pivot value as well as

the value present in the left index.

so I need to swap 100 and 100, so this is the pivot value, so it will return the result

as 25 ok. so this is pivot value that means it will

return the sub list that contains only one element that is 25 , so this function will

return 25 and 100.

So We will get 25 100 only it is sorted, so now all the elements are sorted and here we

can see the final result it is 1 14 14 17 25 and 100, all the elements are in ascending

order ok.

so this is about the Quicksort algorithm how to arrange the numbers in the ascending order

by taking the last value as pivot value so now i will stop this video and in the next

tutorial we will see how to sort the numbers in the descending order as well as how to

take first element, random element and median of three values as the pivot value and how

to arrange the numbers ok so thank you for watching don't forget to subscribe to my channel

I will meet you in next class till then take care.

For more infomation >> Python Tutorials - Quick Sort | Example | Introduction | Last Element As Pivot - Duration: 23:19.

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Trường Giang Nói Thu Trang Diễn Sâu - Trong Bổn Cung Giá Lâm - Duration: 2:16.

For more infomation >> Trường Giang Nói Thu Trang Diễn Sâu - Trong Bổn Cung Giá Lâm - Duration: 2:16.

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Newbie musical genius from Mongolia, Soo-yong: Teaser | Top Management - Duration: 0:34.

[I was always used to being alone]

[I now have friends by my side]

Music is happier together

YouTube Originals TOP Management

Stay tuned for YouTube Original Series, TOP Management

For more infomation >> Newbie musical genius from Mongolia, Soo-yong: Teaser | Top Management - Duration: 0:34.

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Adjectives #5 | Intensifiers + Mitigators | Basic English Grammar - Duration: 12:21.

Hello students and welcome back to my English course on adjectives.

In this video, I'm going to talk to you about intensifiers and mitigators.

Now what are those?

Don't be scared of by their names.

Intensifiers are simply words that will make adjectives stronger.

They will give adjectives more power or more emphasis.

For example, two very common intensifiers in English are 'really' and 'very'.

Mitigators on the other hand, make the adjectives weaker like the words b'rather' or fairly'.

But we're gonna go into a little more detail.

Keep watching.

Let's start with intensifiers.

And I have a list of intensifies for you.

Of course these are not all of them, but it's a good start because they are very common

in English.

Let's have a look.

really This video is really interesting.

The adjectives in this sentence is 'interesting' and we make it stronger with the intensifier,

'really'.

It's really interesting.

very For example, I'm very happy to learn English.

The adjective is 'happy'.

And we give it more power with the intensifier.

very I am very happy to learn English.

Other intensifiers include absolutely.

For example, 'Your new dress is absolutely amazing'.

'extremely' Like

'It's extremely cold outside."

'incredibly' For example, 'Your son is incredibly smart.'

'completely' 'My wallet is completely empty.'

unusually 'The classroom was unusually quiet.'

And finally, 'enough'.

'He isn't old enough to drive.'

Now for this last sentence, the adjective is old and II intensifier is enough.

It's a special case because as you can hear and see, 'enough' always comes after the

adjective.

Intensifiers are commonly used with comparative and superlative adjectives.

For example, with comparative adjectives, we often use 'much'.

For example, 'He runs much faster than me.'

'Faster' is the comparative form of the adjective 'fast'.

And to intensify the comparison, we use the intensifier 'much'.

So he runs much faster than me.

We also use 'a lot'.

For example, 'This red bag is a lot heavier than this white bag'.

'heavier' is the comparative form of the adjective 'heavy'.

And we make it even more powerful with 'a lot heavier'.

And we also use 'far'.

For example, 'She is far taller than me'.

'taller' is the comparative of 'tall'.

We make it more powerful with 'far'.

'Far taller than me'.

Now with superlative adjectives, we can use 'easily'.

For example, 'This is easily the best restaurant in town'.

'best' is the superlative form of the adjective 'good'.

And we make it even more powerful by saying, 'easily the best restaurant'.

And we also use 'by far'.

For example, 'Sarah is by far the smartest girl in class'.

Let's move on to mitigators.

Now mitigators are the opposite of intensifiers.

They weaken the adjectives.

Let's look at a few examples.

Mitigators include 'fairly'.

For example, 'It's fairly sunny today'.

The adjective 'sunny' is weakened by the mitigator 'fairly'.

So it's not sunny. It's a bit less than sunny.

Other mitigator, 'rather'.

So when I say, 'I'm rather tired', I'm not exactly tired.

I'm a bit less.

The adjective is less powerful because of this 'rather'.

Other example, 'pretty'.

'It's pretty expensive'.

Which means it's not expensive.

It's a little bit less.

Or 'quite'. Like, 'The movie was quite good'.

The adjective 'good' is less powerful because of this 'quite'.

Now be very careful because if you use 'quite' with an extreme adjective such as 'terrible',

'perfect', 'enormous', or 'excellent'

quite means 'absolutely'.

It becomes an intensifier.

For example, 'She is quite gorgeous.'

Means she is absolutely gorgeous.

It's more powerful because of the intensified 'quite'.

So be very careful when you use 'quite' because depending on the adjective that you

choose, it has a different meaning.

And it can be either an intensifier or a mitigator.

Let's move on.

Just as intensifiers, mitigators can be used with comparative adjectives.

Let's look at a few examples.

We can use 'a bit'.

For example, 'He's a bit faster than me'.

When you say, "He's a bit faster than me,"

it's less powerful than "He's faster than me."

So 'a bit' mitigates. It weakens 'faster'.

Same goes for 'rather'.

For example, 'This dress is rather nicer than that dress'.

It weakens the comparison - the nicer.

And finally we can say, 'slightly'.

For example, 'My car is slightly older than your car'.

So it's just a little bit older than your car.

It's weak because of this mitigator.

Let's now move on to practice.

I want things to be very clear so I have a few example sentences for you guys.

And I want you to tell me if you see an intensifier or a mitigator.

Let's have a look.

First, 'It's a very interesting game'.

Now what's the adjective in that sentence?

'interesting' of course.

What about 'very'.

Is it an intensifier or a mitigator?

What do you think?

It's an intensifier of course.

It's a very interesting game.

It's more powerful thanks to this 'very'.

The second sentence, 'She cooks fairly good pasta'.

Now the adjective in this sentence is 'good'.

I'm sure you know.

What about 'fairly'?

Is it an intensifier or a mitigator?

It's a mitigator guys.

The adjective 'good' is less powerful because of 'fairly'.

'She cooks fairly good pasta'.

The third example, 'He's quite brilliant at speaking English'.

The adjective is 'brilliant'.

Now just a hint.

It's an extreme adjective.

'brilliant' is a very strong adjective, so what about 'quite'?

Is it an intensifier or a mitigator?

It is an intensifier of course because the adjective is extreme.

I hope you got that.

Next example.

'She's a bit younger than I am'.

The adjective is actually a comparative adjective in this sentence.

'younger'

'a bit' acts as a mitigator of course.

And finally, 'My dog is much fatter than my cat'.

Again, it's a comparative adjective - 'fatter'.

And what about 'much'?

What do you think?

Intensifier, mitigator?

It's an intensifier.

It's much fatter than my cat.

Good job guys.

Let's move on.

Let's go through the sentences again and focus on pronunciation.

Please repeat after me.

It's a very interesting game.

One more time.

It's a very interesting game.

Good.

Second example.

She cooks fairly good pasta.

She cooks fairly good pasta.

Third example guys.

He's quite brilliant at speaking English.

One more time.

He's quite brilliant at speaking English.

Moving on.

She's a bit younger than I am.

She's a bit younger than I am.

And finally, my dog is much fatter than my cat.

My dog is much fatter than my cat.

Excellent guys.

Thank you guys for watching the video.

I hope this has helped.

Now using intensifiers and mitigators takes practice.

A lot of practice.

But I'm sure you can do it and it's worth it.

It will make a true difference to your speaking skills.

Thank you for watching.

See you next time.

Thank you guys for watching my video and for watching this English course on adjectives.

If you want to see more videos on adjectives and

other things please show us your support.

Click 'like', subscribe to the channel,

put your comments below

and share the video with your friends.

Thank you and see you.

For more infomation >> Adjectives #5 | Intensifiers + Mitigators | Basic English Grammar - Duration: 12:21.

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保護された直後に、食事が喉を通らなくなった猫。その予想外の原因に思わず胸が熱くなる！【感動する話】 - Duration: 2:16.

For more infomation >> 保護された直後に、食事が喉を通らなくなった猫。その予想外の原因に思わず胸が熱くなる！【感動する話】 - Duration: 2:16.

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Bodies of 5 S. Korean climbers killed in Himalayas return home - Duration: 1:21.

last week five South Korean climbers were killed in a snowstorm while trying

to scale a 7,000 meter high mountain in the Himalayas on Wednesday their bodies

arrived back home eun-jung man has the latest the bodies arrived at Incheon

International Airport at 5 a.m. on Wednesday on a fly from Kathmandu Nepal

the caskets were carried by families and friends of the deceased who are waiting

at the cargo terminal the group of climbers led by famous mountaineer Kim

Chang who were found dead Saturday near their base camp on mount gorgeou in

western Nepal the five climbers were struck by a snowstorm while pioneering a

new trekking route to the 7,000 meter mount Raja 49 year old Kim who has some

30 years of mountaineering experience was the first South Korean to scale all

14 piece above 8,000 meters without using supplemental oxygen kim also

showed great loyalty to his colleagues back in 2011 he volunteered to find a

colleague who was lost on Annapurna and never made it back in 2013 he was

striking with grief when he lost one of his group members while descending an

8000 meter mountain in the Himalayas a joint memorial for the five Mountaineers

will be held on Friday in gyeongmin Arirang news

For more infomation >> Bodies of 5 S. Korean climbers killed in Himalayas return home - Duration: 1:21.

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اغنية اجنبية روعه لاتفوتك 2018 - Duration: 3:26.

For more infomation >> اغنية اجنبية روعه لاتفوتك 2018 - Duration: 3:26.

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Korea-France agree on fostering business relations in three different steps - Duration: 1:52.

agile president moon is now in Rome having arrived there from Paris on his

last day in the French capital he was focused on strengthening business

relations between France and South Korea Park June reports president would gain

on his last day in France focused on linking up businesses between South

Korea and France at our on par with the current era of fast changing economic

circumstances speaking to business leaders and related government officials

from the two sides president Mun setta relation between

Seoul and Paris can be further boosted by facing challenges together prancer on

euro chamcha combination Divo Google tampoco cochamo Canada through a

verification email to Nevada commando a tamagotchi Argentinian tango won the

warrant roger de cocina de arancini from Bergen Community identical today Shakira

facility Marcin delimiter president moon pointed out three important agreements

he leads with his French counterpart micron first to drastically boost trade

in not only aircraft parts or cosmetics but also investment funds secondly

adapting and expanding ties and new industries that are in line with the

fourth Industrial Revolution the president cited the developments between

a South Korean research team and Francis for no motor into the implementation of

electric vehicles starting 2020 and third upgrading ties between startups

and SMEs to widen options for young Koreans and French entrepreneurs and the

president is already putting words into action by having Korea's auto giant

Hyundai signed a Memorandum of Understanding with French firms to

promote hydrogen fuel cell electric vehicles packagin arirang news

For more infomation >> Korea-France agree on fostering business relations in three different steps - Duration: 1:52.

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Cuộc sống bà Mười đẩy nước ở chợ Thanh Đa giờ ra sao? - Duration: 37:31.

For more infomation >> Cuộc sống bà Mười đẩy nước ở chợ Thanh Đa giờ ra sao? - Duration: 37:31.

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U.S. Defense Secretary Mattis says there is progress in denuclearization talks with N. Korea - Duration: 0:40.

meanwhile the US Secretary of Defense James Madison's there has been progress

in denuclearization talks with North Korea speaking to reporters earlier this

week on board a flight to Vietnam maddis said it's been difficult but

negotiations on the North dismantling its nuclear program have moved forward

and those efforts will continue madis also said that despite the u.s.

and South Korea having partly suspended their joint military exercises military

training and cooperation is ongoing the defense secretary brushed aside

speculation that he will be replaced saying he has never spoken with

president Trump about leaving his position