Viewing other problems with insights similar to only this insight from Codeforces 913G: Power Substring:
Say 10^50. Can you construct a number n modulo 5^50 such that 2^50 * n has the given substring? by Solarion
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Codeforces 1860B: Fancy Coins
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- Be careful not to use brute force. The constraints are less than 10^8. Consider using floor division and modulus instead. by Solarion
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