#include <iostream>
#include <stdio.h>
#include <string.h>
#include <vector>
#include <string>
#include <set>
#include <map>
#include <algorithm>
#include <numeric>
#include <queue>
#include <cassert>
#include <cmath>
#include <bitset>
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(void) {
  int64_t seed; cin >> seed; 
  x = seed;
  vector<uint32_t> a(10000001);
  set<int64_t> st;
  for (int i = 0; i < 10000001; i++) {
    a[i] = generate();
    st.insert(a[i]);
  }
  auto itr = st.begin();
  for (int i = 0; i < 10000001/2; i++) itr++;
  cout << *itr << endl;
  
  return 0;
}