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

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

		int a = Integer.parseInt(br.readLine()); // 100
		int b = Integer.parseInt(br.readLine()); //  25
		int c = Integer.parseInt(br.readLine()); //   1

		int b2 = b + (c / 25);
		int a2 = a + (b / 4);

		int sum = c - (c / 25) * 25 +
				b2 - (b2 / 4) * 4 +
				a2 - (a2 / 10) * 10;

		System.out.println(sum);
	}

}