#define _CRT_SECURE_NO_WARNINGS
#include<iostream>
#include<sstream>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<climits>
#include<cmath>
#include<string>
#include<vector>
#include<set>
#include<map>
#include<queue>
#include<numeric>
#include<functional>
#include<algorithm>
#include<bitset>
#include<tuple>
#include<unordered_set>
#include<random>
#include<array>
#include<cassert>
using namespace std;
#define INF (1<<29)
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(v) v.begin(),v.end()
#define uniq(v) v.erase(unique(all(v)),v.end())

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;
}

void init(uint32_t seed) {
	x = seed;
	y = 1;
	z = 2;
	w = 3;
}


int main(void) {
	uint32_t seed; cin >> seed;
	

	uint32_t ans = 0;
	const int n = 10000001;

	rep(i,32) {
		uint32_t mask = ans | 1 << (32 - i - 1);
		int cnt = 0;
		init(seed);
		rep(j, n) {
			cnt += generate() >= mask;
		}
		if (cnt >= (n+1) / 2)ans = mask;
	}

	cout << ans << endl;
	
	return 0;
}