Hello guys. I was solving this problem http://mirror.codeforces.com/problemset/problem/620/C by using maps. Got TLE on test 42 here http://mirror.codeforces.com/contest/620/submission/29965143 . What I am confused about is the testcase 32 and 42 are similar so why is it giving ac on the first and TLE on the second? Any help will be much appreciated.