import java.util.Scanner;


public class Main_yukicoder32 {

    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 sum = l * 100 + m * 25 + n;

        l = (sum % 1000) / 100;
        m = (sum % 100) / 25;
        n = (sum % 25);
        
        System.out.println(l + m + n);
        
        sc.close();
    }
}