Akshansh_01's blog

By Akshansh_01, history, 2 months ago, In English

Help me with this one!!! Whatever the logic I'm applying, time limit gets exceeded in the Test Case 4. This is my solution — https://codeforces.com/contest/1328/submission/167650940 I've tried without storing the values and directly printing it but the result was same — Time Limit Exceeded.

 
 
 
 
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2 months ago, # |
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It's pretty easy: we have an integer a and we want to find out which another minimal integer we must add to a such that (a + x) % b == 0. let's look at a % b — if it equals to 0, we must add nothing, so just output 0. Else, we just add (b — a % b) and we're done.

167658837

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2 months ago, # |
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It looks like you're trying to brute force add $$$1$$$ to $$$a$$$ until it becomes divisible by $$$b$$$, which looking at TC4 would definitely time out if the required amount to add is significantly large. There's an easy $$$\mathcal O(1)$$$ solution for each pair of numbers in a given test case, which involves a slight bit of number theory.

Hint
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2 months ago, # |
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Read the Tutorial: we just need to print b — b%a because we always increase b

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2 months ago, # |
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Thanks for helping out!!!