Help me in solving SYN7V2 problem

My issue

My code

#include <bits/stdc++.h>
using namespace std;

int main() {

  cout << 3 + 4 << " " __ 2 + 1;

  return 0;
}

Learning course: Learn C++
Problem Link: CodeChef: Practical coding for everyone

@ritwik06
The remove the __ in the cout and put << .
rest is correct.