Hi I have some problem.↵
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I tried this problem https://mirror.codeforces.com/contest/1490/problem/E↵
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https://mirror.codeforces.com/contest/1490/submission/142727970↵
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It worked well in custom innovvocation, but when I submit it, I got a WA.↵
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I want to know why this happened. Is it a technical problem?
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I tried this problem https://mirror.codeforces.com/contest/1490/problem/E↵
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https://mirror.codeforces.com/contest/1490/submission/142727970↵
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It worked well in custom in
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I want to know why this happened. Is it a technical problem?