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 c2 = c / 25;
		if (c2 > 0) {
			b = b + c2;
			c = c - c2 * 25;
		}

		int b2 = b / 4;
		if (b2 > 0) {
			a = a + b2;
			b = b - b2 * 4;
		}

		int a2 = a / 10;
		if (a2 > 0) {
			a = a - a2 * 10;
		}

		System.out.println(a + b + c);

	}

}