import java.util.Scanner;

public class testC {
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        //ここから処理開始

        int L = sc.nextInt();  //100yen
        int M = sc.nextInt();  //25yen
        int N = sc.nextInt();  //1yen

        while (N >= 25) {
            M++; N -= 25;
        }

        while (M >= 4) {
            L++; M -= 4;
        }

        while (L >= 10) {
            L-=10;
        }

        System.out.println(L + M + N);

        //ここまで
        sc.close();
    }
}