OJ Board

Hi, this is my first post here :)
im getting a WA
this is my code :
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <iomanip>
#include <fstream>
#include <sstream>
#include <string>
#include <cstring>
#include <cctype>
#include <cmath>
#include <vector>
#include <stack>
#include ...