import java.util.Scanner;
import java.util.Arrays;

public class pre {
    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

		int l = sc.nextInt();
        int n = sc.nextInt();
        int m = sc.nextInt();
		
		if(m/25 > 0){
			n += m/25;
			m %= 25;
		}
		
		if((25*n)/100 > 0){
			l += (25*n)/100;
			n = ((25*n)%100)/25;
		}
		
		if(100*l > 1000)
			l = ((100*l)%1000)/100;
		
		int sum = l+n+m;
		
		System.out.println(sum);
    }
}