Hacker Rank C++ template

hacker_rank_cplus_template.cpp

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

int myFunction(int a, int b) {
  return a+b;
}
int main() {
  int num1, num2;
  int sum;
  int t;
  cin>>t;
  for (int i=0;i<t;i++) {
    cin>>num1>>num2;
    sum = myFunction(num1,num2);
    cout<<sum<<endl;
  }
  return 0;
}