I see that some team are trying our simple practice problem with no luck!
I have put one correct solution here. If you send this to the list, they might be able to perform better and get used to the server environment. It should be again noted that only a few Sharif teams will participate in the online contest. Others have also received username and passwords which does not allow them to login.

using namespace std;
ifstream fin("Z.IN");

int main() {
int a, b;
while (fin >> a >> b) {
cout }
return 0;