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How to know if a number N is divisible by k ? ( N <= 10^5000000) ?
source link: https://codeforces.com/blog/entry/96108
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Um, hi ... ? Basically we have a number N (N <= 10^5000000) represented by a string. Let say that |N] = the length of string N. Now I'm given an integer k (k <= 1e9). How do I confirm that N is divisible by k in O(|N|) ??
P/S : Notice that I want solution that works in O(|N|), not O(|N|log5000000). Anyone can help me ?
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