Someone hacked my solution of problem D. Now it says WA. But I can't find any mistake. Please help me to find the mistake. My submission: https://codeforces.com/contest/1520/submission/115269582
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Someone hacked my solution of problem D. Now it says WA. But I can't find any mistake. Please help me to find the mistake. My submission: https://codeforces.com/contest/1520/submission/115269582
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In fact, you should also calculate the negative numbers.
Utsa2000, EDqwq is the someone who hacked your solution :P
Thank you. I understand now. I should use map.
For $$$a_i-i<0$$$ , you should calculate them instead of just ignoring them :(
problem D is really a war