import java.util.Scanner;

public class No32 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int l = sc.nextInt(); //100円硬貨
		int m = sc.nextInt(); //25円硬貨
		int n = sc.nextInt(); //1円硬貨
		int sum = l * 100 + m * 25 + n;
		int k = sum / 1000; //1000円札
		l = (sum - k * 1000) / 100;
		m = (sum - k * 1000 - l * 100) / 25;
		n = (sum - k * 1000 - l * 100 - m * 25);
		
		System.out.println(l + m + n);
	}
}