import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int A = in.nextInt();
        int B = in.nextInt();
        int C = in.nextInt();
        int sum = 0;
        if (A % 10 == 0 || B % 10 == 0 || C % 10 == 0) {
            A = A * 2 / 10;
            B = B * 3 / 10;
            C = C * 5 / 10;
            sum = A + B + C;
            System.out.println(sum);
        }
    }
}