using System;

namespace prob032
{
    class Program
    {
        static void Main(string[] args)
        {
            int L = int.Parse(Console.ReadLine());
            int M = int.Parse(Console.ReadLine());
            int N = int.Parse(Console.ReadLine());

            int M1 = N / 25;
            M += M1;
            N = N - M1 * 25;

            int L1 = M / 4;
            L += L1;
            M = M - L1 * 4;

            int O = L / 10;
            L = L - O * 10;

            Console.WriteLine(L + M + N);
        }
    }
}