import java.util.Scanner;

public class PiggyBank {

    public static void main(String[] args) {
        
        int l;
        int m;
        int n;
        
        Scanner scanner = new Scanner(System.in);
        
        l = scanner.nextInt();
        m = scanner.nextInt();
        n = scanner.nextInt();
        
        // 1 -> 25
        int twentyF = n / 25;
        int amari1 = n % 25;
        
        // 25 -> 100
        int oneH = (m+twentyF) / 4;
        int amari2 = (m+twentyF) % 4;
        
        // 100 -> 1000
        int oneT = (l+oneH) / 10;
        int amari3 = (l+oneH) % 10;
        
        System.out.println(amari1 + amari2 + amari3);
        
    }
    
}