Suppose, you have icpc regional ahead or any important contest like that ; but you are 103°F high :') How would you manage to do well with that much high fever?
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Suppose, you have icpc regional ahead or any important contest like that ; but you are 103°F high :') How would you manage to do well with that much high fever?
I don't understand how this new logo goes with .
Previous one was much relatable and nice. I wish this change to be temporary.
Good things about 2020
We were alive in 2020
How to solve this problem
An array of n elements is given. In this array, How many intervals [l,r] contain at least two 2 ? How many intervals [l,r] contain at least one 4? How many intervals contain two 2 and one 4 together? Note that, [1,1],[2,2] these intervals are also valid. Each of them contains 1 element.
Size of n is 1e5.
Problem Link I have come up with a nice idea . I will just use three vectors to keep the negative numbers(v1),zeros(v2),positive numbers(v3).
Let the size of the vectors v1,v2,v3.
Then there will be (v1* v3) negative products , ((v1*v2 + (v3*v2)) zeros , ( (v1*(v1-1))/2 + (v3*(v3-1))/2) positive products.
So I can easily know whether Kth number will be negative or zero or positive.
But I am failing to print the answer when It is a positive number. I don't know how to find the positive product which is in this -- >( (v1*(v1-1))/2 + (v3*(v3-1))/2) count.
Please Help.
Can anyone provide me some 2D segment tree problems ?
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