Below are 2 submissions I made for the above mentioned CSES problem.

Question link -> https://cses.fi/problemset/task/1158

AC submission -> https://cses.fi/problemset/result/10353320/

Runtime error submission -> https://cses.fi/problemset/result/10353300/

The only difference between the submissions is that in the AC submission, I commented out (#define int long long). Otherwise everything else is exactly the same.

Could someone explain why this happens? Is it some fault in my code? or something wrong with CSES website?