This is the question. https://codeforces.net/contest/1974/problem/E

AC submission -> https://codeforces.net/contest/1974/submission/287177874

WA submission -> https://codeforces.net/contest/1974/submission/287176403

In both my submissions, i have the exact same approach, only diff being in 1 case i use the current dp state to update the next dp states(in the WA submission) and in the AC submission i use previous dp states to update current dp states.

Where am i going wrong?