After Educational Codeforces Round 120, I went through all the successful hacks and found some suspicious hacks. A couple of submissions of problem A by an account called SIMON_MOLODETS have been successfully hacked. I got curious and viewed his code, and his is what I found: 140819355

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main(){
int n;
cin>>n;
if(n!=67){
for(int i=0;i<n;i++){
    int a;
    int b;
    int c;
    cin>>a>>b>>c;
    if(a+b==c or a+c==b or c+b==a) {
    cout<<"YES"<<"\n";
    continue;
    }
    if((a==b and c%2==0) or (c==b and a%2==0) or (a==c and b%2==0)){
    cout<<"YES"<<"\n";
    continue;
    }
    else{
        cout<<"NO"<<"\n";
    }
  } 
}
else{
    for(int i=0;i<67;i++){
        cout<<"NO"<<"\n";
    }
  }
}