using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace yukicoder_32
{
    class Program
    {
        static void Main(string[] args)
        {
            int N = int.Parse(Console.ReadLine());
            int M = int.Parse(Console.ReadLine());
            int L = int.Parse(Console.ReadLine());
            int O = 0;
            for (int l = L; l >= 25; l -= 25)
            {
                L -= 25;
                M++;
            }
            for(int m = M; m >= 4; m -= 4)
            {
                M -= 4;
                N++;
            }
            for(int n = N; n >= 10; n -= 10)
            {
                N -= 10;
                O++;
            }
            Console.WriteLine(L + N + M);
            Console.ReadLine();
        }
    }
}