import java.util.Scanner;

public class yukicoder_32 {
	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		
		int l = stdIn.nextInt();
		int m = stdIn.nextInt();
		int n = stdIn.nextInt();
		
		int sum = (l * 100) + (m * 25) + (n * 1);
		
		int yen1000 = sum / 1000;
		int yen100 = (sum % 1000) / 100;
		int yen25 = ((sum % 1000) % 100) / 25;
		int yen1 = (((sum % 1000) % 100) % 25);
		
		int coin = yen100 + yen25 + yen1;
		
		System.out.println(coin);
	}
}