Help me in solving BMMC18 problem

help
,
1

My issue

My code

// Update the code below to solve the problem

#include <iostream>
#include <string>
using namespace std;

int main() 
{
 int t;
 cin>>t;
while(t--)
 {
     int X,Y;
     cin>>X>>Y;
     cout<<X-7<<endl;
  }
 return 0;
}

Learning course: Solve Programming problems using C++
Problem Link: CodeChef: Practical coding for everyone