#include <bits/stdc++.h>

using namespace std;

using ll = long long;

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(void) {
    ll seed; cin >> seed; 
    x = seed;
    int n = 10000001;
    uint32_t L = 2140000000, R = 2151000000;
    ll cntL = 0;
    vector<uint32_t> v;
    for (int i = 0; i < n; i++) {
        uint32_t x = generate();
        if (x >= L && x <= R) {
            v.push_back(x);
        } else if (x < L) {
            cntL++;
        }
    }
    sort(v.begin(), v.end());
    assert(cntL <= n / 2 && cntL + (ll)v.size() > n / 2);
    cout << v[n / 2 - cntL] << endl;
    return 0;
}