using System;

namespace Yukicorder_032 {
    class Program {
        static void Main(string[] args) {
            int L = Input(0, 1000);
            int M = Input(0, 1000);
            int N = Input(0, 1000);
            int Result = Processing(L, M, N);
            Console.WriteLine(Result);

        }

        static int Input(int Min , int Max) {
            int Number = 0;
            try {
                Number = int.Parse(Console.ReadLine());
                if(Number < Min || Number > Max) {
                    Console.WriteLine(Min + "以上" 
                        + Max + "以下で入力してください");
                }
            }catch(FormatException e) {
                Console.WriteLine("数字を入力してください");
            }catch(Exception E) {
                Console.WriteLine("予期せぬエラーです");
            }
            return Number;
        }

        static int Processing(int L , int M , int N) {
            int Count = 0;
            if(N >= 25) {
                Count += N % 25;
                M += N / 25;
            }else{
                Count += N;
            }
            if(M >= 4) {
                Count += M % 4;
                L += M / 4;
            }else{
                Count += M;
            }
            if(L >= 10) {
                Count += L % 10;
            }
            return Count;
        }
    }
}