Artifact 299e5c03487b074ccbd1c4fc5b2b60faf84e7c21
#include <iostream>
#include <sstream>
#include <iomanip>
#include <vector>
#include <string>
#include <map>
#include <set>
#include <algorithm>
#include <numeric>
#include <iterator>
#include <functional>
#include <complex>
#include <queue>
#include <stack>
#include <cmath>
#include <cassert>
#include <cstring>
using namespace std;
typedef long long LL;
typedef complex<double> CMP;
class TheLockDivOne { public:
string password(int n, long long k)
{
--k;
return lexlast(n-1, k);
}
string kth(int i, LL k)
{
if( i < 0 )
return "";
if( k & (1LL<<i) )
return "1" + kth(i-1, k==(1LL<<i) ? (1LL<<i)-1 : k-(1LL<<i)-1);
else
return "0" + kth(i-1, k);
}
string lexlast(int i, LL k)
{
if( i < 0 )
return "";
if( k & (1LL<<i) ) {
string a = kth(i-1, (1LL<<i)-1);
if( k == (1LL<<i) )
return "1" + a;
string b = lexlast(i-1, k-(1LL<<i)-1);
return "1" + max(a,b);
}
else
return "0" + lexlast(i-1, k);
}
};
// BEGIN CUT HERE
#include <ctime>
double start_time; string timer()
{ ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
{ os << "{ ";
for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
void verify_case(const string& Expected, const string& Received) {
bool ok = (Expected == Received);
if(ok) cerr << "PASSED" << timer() << endl; else { cerr << "FAILED" << timer() << endl;
cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
#define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
#define END verify_case(_, TheLockDivOne().password(n, k));}
int main(){
CASE(0)
int n = 2;
long long k = 4LL;
string _ = "11";
END
CASE(1)
int n = 3;
long long k = 8LL;
string _ = "111";
END
CASE(2)
int n = 4;
long long k = 6LL;
string _ = "0110";
END
CASE(3)
int n = 10;
long long k = 1LL;
string _ = "0000000000";
END
CASE(4)
int n = 7;
long long k = 100LL;
string _ = "1111110";
END
CASE(4)
int n = 50;
long long k = 0xffffffffffffLL;
string _ = "1111110";
END
}
// END CUT HERE