import java.util.Scanner;
 
class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int k = 0;
		int l = sc.nextInt();
		int m = sc.nextInt();
		int n = sc.nextInt();
		m += n/25;
		n %= 25;
		l += m/4;
		m %= 4;
		k += l/10;
		l %= 10;
		System.out.println(l+m+n);
	}
}