#include <iostream>

using namespace std;

int main()
{

  int grade1, grade2, grade3, grade4, grade5;

  cout << "Input grade 1: "; 
  cin >> grade1;

  cout << "Input grade 2: "; 
  cin >> grade2;

  cout << "Input grade 3: "; 
  cin >> grade3;

  cout << "Input grade 4: "; 
  cin >> grade4;

  cout << "Input grade 5: "; 
  cin >> grade5;


  float average = (static_cast<float>(grade1+grade2+grade3+grade4+grade5)/5);

  cout << "The average grade is " << average << endl;


}