#include<bits/stdc++.h> #define rep(i,a,b) for(int i=a;i<b;i++) #define rrep(i,a,b) for(int i=a;i>=b;i--) #define fore(i,a) for(auto &i:a) #define all(x) (x).begin(),(x).end() #pragma GCC optimize ("-O3") using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); } typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60; template<class T>bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; } template<class T>bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; } //--------------------------------------------------------------------------------------------------- /*--------------------------------------------------------------------------------------------------- ∧_∧ ∧_∧ (´<_` ) Welcome to My Coding Space! ( ´_ゝ`) / ⌒i / \ | | / / ̄ ̄ ̄ ̄/ | __(__ニつ/ _/ .| .|____ \/____/ (u ⊃ ---------------------------------------------------------------------------------------------------*/ ll seed; //--------------------------------------------------------------------------------------------------- uint32_t x = 0, y = 1, z = 2, w = 3; ll generate() { uint32_t t = (x ^ (x << 11)); x = y; y = z; z = w; w = (w ^ (w >> 19)) ^ (t ^ (t >> 8)); return (ll)w; } //--------------------------------------------------------------------------------------------------- int count(ll c) { x = seed, y = 1, z = 2, w = 3; int res = 0; rep(i, 0, 10000001) if (generate() <= c) res++; return res; } //--------------------------------------------------------------------------------------------------- void _main() { cin >> seed; ll ng = 0, ok = infl; while (ng + 1 != ok) { ll md = (ng + ok) / 2; if (5000001 <= count(md)) ok = md; else ng = md; } cout << ok << endl; }