﻿#include <iostream>
using namespace std;

int main() {
    int marks = 85;

    if (marks >= 90) {
        cout << "Grade A+" << endl;
    }
    else if (marks >= 80) {
        cout << "Grade A" << endl;
    }
    else if (marks >= 70) {
        cout << "Grade B" << endl;
    }
    else if (marks >= 60) {
        cout << "Grade C" << endl;
    }
    else {
        cout << "Fail" << endl;
    }

    return 0;
}