#include <iostream>
using namespace std;

int main() {
int marks;
cin >> marks;
if (marks>100){
	cout << "you are MADHARCHOD";
}
else if (marks > 90){
	cout << "your grade is A ";
}
else if (marks>80){
	cout << "your grade is B ";
}
else if (marks>59){
	cout << "your grade is C ";
}
else if (marks<59 ){
	cout << "you are FAIL ";
}
	return 0;
}