#include <iostream>
using namespace std;

int main(){
    int marks;
    cout<<"Enter Your Marks: ";
    cin>>marks;
    if (marks >= 80){
        cout<<"Your Grade is A+";
    }
    else if (marks >= 75){
        cout<<"Your Grade is A";
    }
    else if (marks >= 70){
        cout<<"Your Grade is A-";
    }
    else if (marks >= 65){
        cout<<"Your Grade is B+";
    }
    else if (marks >= 60){
        cout<<"Your Grade is B";
    }
    else if (marks >= 55){
        cout<<"Your Grade is B-";
    }
    else if (marks >= 50){
        cout<<"Your Grade is C+";
    }
    else if (marks >= 45){
        cout<<"Your Grade is C";
    }
    else if (marks >= 40){
        cout<<"Your Grade is C-";
    }
    else if (marks <= 40){
        cout<<"Your Grade is F";
    }
    else{
        cout<<"Enter Valid Marks";
    }
    return 0;
}