import java.util.Scanner;

public class No32 {

    public static void main(String[] args) {
        int[] coins = { 1000, 100, 25, 1 };

        Scanner sc = new Scanner(System.in);
        int sum = 0;
        for (int i = 1; i <= 3; i++) {
            sum += sc.nextInt() * coins[i];
        }

        int[] coinsCnt = new int[4];

        for (int i = 0; i < coins.length; i++) {
            coinsCnt[i] = sum / coins[i];
            sum -= coins[i] * coinsCnt[i];
        }

        int result = 0;

        for (int i = 1; i <= 3; i++) {
            result += coinsCnt[i];
        }

        System.out.println(result);

        sc.close();
    }

}