import java.util.Scanner;
class Wandbox
{
    public static void main(String[] args)
    {
    	Scanner sc = new Scanner(System.in);
    	int l = sc.nextInt();
    	int m = sc.nextInt();
    	int n = sc.nextInt();
    	int cnt = 0;
    	int sum = l * 100 + m * 25 + n;
    	
    	sum = sum % 1000;
    	
    	cnt = cnt + sum / 100;
    	
    	sum = sum % 100;
    	
    	cnt = cnt + sum / 25;
    	
    	sum = sum % 25;
    	
    	cnt = cnt + sum;
    	
        System.out.println(cnt);
    }
}