#include <iostream>
#include <math.h>

using namespace std;

int main(){
	int start, n1, n2, n3;

	while(cin >> start >> n1 >> n2 >> n3){
		if(start == 0 && n1 == 0 && n2 == 0 && n3 == 0){
			break;
		}

		int degree = 0;
	}	

	return 0; 
}