// intro to arrays
// why bother with arrays? 
// here's a tedious way of processing user-input grades

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

	int grade = SavitchIn.readLineInt();
	// want code to count frequency of grades from input

	// declare counters:
	int count0,count1,count2; // etc
	count0=0; count1=0; count2=0; // etc

	while (grade >= 0) {
	    if (grade==0) count0++;
	    else if (grade==1) count1++;
	    else if (grade==2) count2++;
	    // etc
	    else 
		;
	    grade = SavitchIn.readLineInt();
	}

	System.out.println("Grade 0: " + count0);
	System.out.println("Grade 1: " + count1);
	System.out.println("Grade 2: " + count2);


    }

}