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