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 K = 0;
        int L = sc.nextInt();
        int M = sc.nextInt();
        int N = sc.nextInt();

        if(N/25>0){
            M += N/25;
            N = N%25;
        }
        if(M/4>0){
            L += M/4;
            M = M%4;
        }
        if(L/10>0){
            K += L/10;
            L = L%10;
        }

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


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