import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) {
		BufferedReader buff = new BufferedReader(new InputStreamReader(System.in));

		try {
			final int[] MONEY = { 100, 25, 1 };
			int sum = 0;
			for (int i = 0; i < 3; ++i) {
				sum += MONEY[i] * Integer.parseInt(buff.readLine());
			}

			int ans = 0;
			sum %= 1000;
			for(int i = 0; i < 3; ++i){
				ans += sum / MONEY[i];
				sum %= MONEY[i];
			}

			System.out.println(ans);

		} catch (NumberFormatException e) {

		} catch (IOException e) {

		}
	}
}