// Helene Martin, CSE 142
// Given a percentage score, outputs a letter grade

import java.util.*;

public class GradeCalculator {
	public static void main(String[] args){ 
		Scanner console = new Scanner(System.in);
		System.out.print("What percentage did you earn? ");
		int percent = console.nextInt();
		
		if (percent >= 90) {
			System.out.println("You got an A!");
		} else if (percent >= 80) {
				System.out.println("You got a B!");
		} else if (percent >= 70) {
				System.out.println("You got a C!");
		} else if (percent >= 60) {
				System.out.println("You got a D!");
		} else {
				System.out.println("You got an F!");
		}	
	}
}