#include<bits/stdc++.h>
#define SIZE 10000001
using namespace std;

class Xorshift{
  private:
    uint32_t x, y, z, w;
  public:
    Xorshift(uint32_t seed){
        x = seed;
        y = 1;
        z = 2;
        w = 3;
    }
    uint32_t operator()(){
        uint64_t t=(x^(x<<11));
        x=y; y=z; z=w;
        return w=(w^(w>>19))^(t^(t>>8));
    }
};

int main(){
  uint32_t seed; cin >> seed;
  Xorshift xorshift(seed);
  uint32_t padding = 2500000;
  uint32_t bottom =  (1<<31) - padding;
  uint32_t top = (1<<31) + padding;
  vector<uint32_t> ans;
  ans.reserve(20000);
  int cnt = 0;

  for(int i = 0; i < SIZE; i++){
    uint32_t tmp = xorshift();
    if(tmp >= bottom && tmp <= top){
      ans.push_back(tmp);
    }else if(tmp < bottom){
      cnt++;
    }
  }
  sort(ans.begin(),ans.end());
  cout << ans[SIZE/2 - cnt] <<endl;
  return 0;
}