Hi Codeforces Community,

I don't know for what testcase my code fails, Please Help me
Code Link : https://codeforces.net/contest/1384/submission/88691957
Problem Link: https://codeforces.net/contest/1384/problem/B2

In below simple problem's code, I am not able to understand what mistake i have made in my code
Code Link : https://codeforces.net/contest/1389/problem/C
Problem Link : https://codeforces.net/contest/1389/problem/C

Thanks In Advance