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

namespace programPractice
{
    class Program
    {
        public static void Main(string[] args)
        {
            int[] num = Console.ReadLine().Split().Select(int.Parse).ToArray();
            int sum = num[0] * 100 + num[1] * 25 + num[2] * 1;

            int nPaper = sum / 1000;
            int cSum = sum - 1000 * nPaper;

            int n100 = cSum / 100;
            int cSum2 = cSum - n100 * 100;

            int n25 = cSum2 / 25;
            int n1 = cSum2 - n25 * 25;

            int nCoin = n100 + n25 + n1;
            Console.WriteLine(nCoin);
         }
    }
}