#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define rep(i,n) for(int (i)=0;(i)<(n);(i)++)
#define u32 unsigned int
bool test(u32 s, u32 m) {
  u32 x=s, y=1, z=2, w=3;
  ll bigger = 0;
  ll smaller = 0;
  ll eq = 0;
  rep(_, 1e7+1) {
    ll t = (x^(x<<11));
    x = y;
    y = z;
    z = w;
    w = (w ^ (w >> 19)) ^ (t ^ (t >> 8));
    if(w>m) {
      bigger++;
    } else if(w==m) {
      eq++;
    } else {
      smaller++;
    }
  }
  return bigger>=smaller;
}
bool valid(u32 s, u32 m) {
  u32 x=s, y=1, z=2, w=3;
  ll bigger = 0;
  ll smaller = 0;
  ll eq = 0;
  rep(_, 1e7+1) {
    ll t = (x^(x<<11));
    x = y;
    y = z;
    z = w;
    w = (w ^ (w >> 19)) ^ (t ^ (t >> 8));
    if(w>m) {
      bigger++;
    } else if(w==m) {
      eq++;
    } else {
      smaller++;
    }
  }
  return bigger==smaller;
}

int main() {
  u32 s; cin >> s;
  u32 u = 4294967295; // 2**32=4294967296
  u32 l = 0;
  while(u-l>1) {
    u32 mid = (u+l)/2;
    if(test(s, mid)) {
      l = mid;
    } else {
      u = mid;
    }
  }
  u32 ans;
  if(valid(s, u)) ans = u;
  else ans = l;
  cout << ans << endl;
  return 0;
}