// intro to arrays
// better way of processing grades input by user!

public class array_better {
    public static void main(String[] args) {

	int grade = SavitchIn.readLineInt();
	// should reprompt user to prevent out-of-bounds grade!

	// want code to count frequency of grades from input

	int[] counts = new int[101]; // counts go from 0 to 100
	// could define named constant N instead of 101 to make
	// code more general

	while (grade >= 0) {
	    counts[grade]++;
	    grade = SavitchIn.readLineInt();
	}

	for(int i=0; i < counts.length ; i++)
	    System.out.println("Grade "+i+": " + counts[i]);

    }

}