#include "bits/stdc++.h"
using namespace std;

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;
}

int main() {
	int seed;
	while (~scanf("%d", &seed)) {
		x = seed, y = 1, z = 2, w = 3;
		int n = 10000001, k = 1U << 21;
		auto mid = 1U << 31;
		vector<int16_t> cnt(k * 2 + 1);
		int L = 0;
		for (int i = 0; i < n; i++) {
			auto x = generate();
			if (x < mid - k)
				++ L;
			else if(x <= mid + k)
				++ cnt[x + k - mid];
		}
		for (int d = -k; d <= k; ++ d) {
			L += cnt[k + d];
			if (L > n / 2) {
				printf("%u\n", mid + d);
				break;
			}
		}
	}
}