public class Main {

    public static void main(String[] args) {
        int n = 23333333;
        for (int i = 0; i <= n; i++) {
            double x = (-1.0) * i / n * log2(1.0 * i / n, 2) * i;
            double y = (-1.0) * (n - i) / n * log2(1.0 * (n - i) / n, 2) * (n - i);
            if (x + y >= 11625907.5798) {
                System.out.println(i);
                return;
            }
        }
    }

    //如何计算logx(y)=ln(y)/ln(x);    Math.log(x) = In(x)
    public static double log2(double x, double base) {
        return Math.log(x) / Math.log(base);
    }
}