Hey guys, I was solving a problem and then I just sent it to see if it's correct, I am talking about this problem: https://mirror.codeforces.com/problemset/problem/253/A and it gives me WA at the first pretest even tho my solution it's correct, https://mirror.codeforces.com/contest/253/submission/47515698 it's about this submission, what is that "checker log" saying there?