import java.util.Scanner;
	

public class Main{
	
	
	public static void main(String args[])throws Exception{
		
		Scanner sc = new Scanner(System.in);
		int L = sc.nextInt();
		int M = sc.nextInt();
		int N = sc.nextInt();
		M += N/25;
		N %= 25;
		L += M/4;
		M %= 4;
		L %= 10;
		System.out.println(L+M+N);
	}
}