import java.util.Random;
import java.util.Scanner;

public class Main {
    public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        int L = scan.nextInt();
        int M = scan.nextInt();
        int N = scan.nextInt();
        while(N>=25){
            N-=25;
            M++;
        }
        while(M>=4){
            M-=4;
            L++;
        }
        while(L>=10){
            L-=10;
        }
        System.out.println(L+M+N);
    }
}