public class MainClass public static void main String args int count f

public class MainClass {
    public static void main(String[] args) {
        int count = 0;
        for (int i = 0; i < 1000; i++) {
            if ((stepen(2, i) - i) % 7 == 0) count++;
        }
        System.out.println(count);
    }
    public static int stepen(int a, int b) {
        if (b == 0) return 1;
        else {
            return a * stepen(a, b - 1);
        }
    }
}