OJ Board

i m getting WA in beverages... help me with some test cases....
#include<iostream>
#include<cstdio>
#include<map>
#include<string>
#include<queue>
#include<algorithm>
using namespace std;
int s[200];
int main()
{
int n,er=1,k,i,j,cnt,fr;
while(scanf("%d",&n)!=EOF)
{int mat[n+1][n+1],deg[n+1 ...