We are provided with a 2D plane and a point (, ). We have to find a rectangle (, , , ) such that itencompasses the given point (, ). The rectangle chosen must satisfy the given condition . Ifmultiple rectangles are possible the we must choose the one with the least Euclid distance between the center of the rectangle and the point (, ).
Image Source – codeforces
Input : 70 10 20 5 5 3 Output :12 0 27 9 Input :100 100 32 63 2 41 Output :30 18 34 100
The logic behind the problem is as follows. First of all we reduce to lowest irreducible form by dividing a and b by . We think of the problem in two separate dimensions and independently. We find out the after dividing a and b by their gcd to find the maximum distance that we can cover safely by staying in the range of . Since we have to find rectangle with minimum distance of its center from the point (, ), therefore we start with the assumption that point (, ) is our center. Then we find and by subtracting and adding half of length to . If either or goes out of range then we shift the coordinates accordingly to bring it inside the range . Similarly we proceed to calculate and .
For the first example according to above logic the answer comes out to be .
12 0 27 9
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