#include <iostream>

using namespace std;

int main()
{
  int testGrade;

  cout << "Please enter your grade for test 1: ";
  cin >> testGrade;

  if (testGrade >= 90 && testGrade <= 100)
  {
    cout << "Your grade is an A." << endl;
  }
else if (testGrade >= 80 && testGrade <= 89)
{
  cout << "Your grade is a B." << endl;
}
  else if  (testGrade >= 70 && testGrade <= 79)
  {
    cout << "Your grade is a C." << endl;

  }
  else if  (testGrade >= 60 && testGrade <= 69)
  {
    cout << "Your grade is a D." << endl;
  }

  else if  (testGrade >= 0 && testGrade <= 59)
  {
    cout << "Your grade is an F." << endl;
  }
  

  
  return 0;
}