[BOJ] 1476. 날짜 계산

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int E=sc.nextInt();
		int S=sc.nextInt();
		int M=sc.nextInt();
		int cnt=0;
		int Ec=0,Sc=0,Mc=0;
		while(true) {
			if(Ec==E && Sc==S && Mc==M) {
				break;
			}

			if(Ec>=15) {
				Ec=0;
			}
			
			if(Sc>=28) {
				Sc=0;
			}
			
			if(Mc>=19) {
				Mc=0;
			}
			
			Ec++;Sc++;Mc++;
			cnt++;
		}
		System.out.println(cnt);
	}
	
}