Link to my source code https://ideone.com/q83VDg. I am getting TLE in test case 14 but my complexity if O(N*200). Please take a look and tell me if I am wrong.Link to the problem http://mirror.codeforces.com/contest/1335/problem/E2
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Map operations are not constant, they are logarithmic. It may not seem as significant, but N*200*lgN will surely get TLE.
I replaced map with 2d array but now I am getting MLE code https://mirror.codeforces.com/contest/1335/submission/77007251
The size of array is too big (200002 * 200). You can try unodered_map with run in O(1) complexity or you can change the algorithm you using