#include<bits/stdc++.h>

#define INF 1e9
#define llINF 1e18
#define MOD 1e9+7
#define pb push_back
#define mp make_pair 
#define F first
#define S second
#define ll long long
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(){
  uint32_t seed;
  cin>>seed;
  x=seed;
  deque<uint32_t>a;
  ll left=0,right=pow(2,32);
  ll mid=0;
  while(right-left>1){
    //  cout<<left<<" "<<right<<endl;
    mid=(left+right)/2;
    x=seed;y=1;z=2;w=3;
    int cnt=0;
    int cnt2=0;
    for(int i=0;i<10000001;i++){
      ll num=generate();
      if(mid<num)
	cnt++;
      else if(mid>num)
	cnt2++;
    }
    if(cnt==5000000&&cnt2==5000000){cout<<mid<<endl;break;}
    else if(cnt<5000000){
      right=mid;
    }else if(cnt>5000000){
      left=mid;
    }else if(cnt==5000000){
      right=mid;
    }
  }
  //cout<<mid<<endl;
  return 0;
}