import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        //ここから処理開始
        int l = sc.nextInt();
        int m = sc.nextInt();
        int n = sc.nextInt();
        m += (n / 25);
        n = (n % 25);
        l += (m / 4);
        m = (m % 4);
        int t = (l / 10);
        l = (l % 10);
        System.out.println(n + m + l);
        //ここまで
        sc.close();
    }
}