#include<iostream>

uint32_t x = 0, y = 1, z = 2, w = 3;
uint32_t generate() {
	uint32_t t = (x ^ (x << 11));
	x = y;
	y = z;
	z = w;
	w = (w ^ (w >> 19)) ^ (t ^ (t >> 8));
	return w;
}

#define N 10000001
#define n (N-1)/2 + 1

uint32_t a[n];

bool make(uint32_t& c) {
	if (c <= a[0]) {
		for (int j = n - 1; j > 0; j--) {
			a[j] = a[j - 1];
		}
		a[0] = c;
		return true;
	}
	for (int i = 0; i < n - 1; i++) {
		if (a[i] <= c && c < a[i + 1]) {
			for (int j = n - 1; j > i+1; j--) {
				a[j] = a[j - 1];
			}
			a[i + 1] = c;
			return true;
		}
	}
	for (int i = 0; i < n; i++) {
		if (a[i] == 0) {
			a[i] = c;
			break;
		}
	}
	return true;
}

int main(void) {
	int64_t seed; std::cin >> seed;
	x = seed;
	for (int i = 0; i < N; i++) {
		uint32_t b = generate()+1;
		make(b);
	}
	std::cout << a[n - 1] << std::endl;
	return 0;
}