Bittijono

input/code.cpp: In function 'int main()':
input/code.cpp:244:50: error: 'reverse' was not declared in this scope
    reverse(reverseBits.begin(), reverseBits.end());
                                                  ^

/*
#include <iostream>
#include <fstream>
#include <string>
#include <vector>

using namespace std;

int main()
{
	string rows[10];
	for (int i = 0; i < 10; i++)
	{
		for (int o = 0; o < 10; o++)
		{
			int n = 0;
			if (i < 10 / 2)
			{
				n = i + o;
			}
			else if (i < 9)
			{
				n = i + o + 1;
			}
			else
			{
				n = i + o + 6;
			}
			while (n > 9)
			{
				n -= 10;
			}
			rows[i] += to_string(n);

			if (i < 9)
			{
				n = o - i;
			}
			else
			{
				n = o - i;
			}
			while (n < 0)
			{
				n += 10;
			}

			if (n == 0)
			{
				rows[i] += "A";
			}
			else if (n == 1)
			{
				rows[i] += "B";
			}
			else if (n == 2)
			{
				rows[i] += "C";
			}
			else if (n == 3)
			{
				rows[i] += "D";
			}
			else if (n == 4)
			{
				rows[i] += "E";
			}
			else if (n == 5)
			{
				rows[i] += "F";
			}
			else if (n == 6)
			{
				rows[i] += "G";
			}
			else if (n == 7)
			{
				rows[i] += "H";
			}
			else if (n == 8)
			{
				rows[i] += "I";
			}
			else if (n == 9)
			{
				rows[i] += "J";
			}
			if (o != 9)
			{
				rows[i] += " ";
			}
		}
		std::cout << rows[i] << "\n";
	}

	ofstream myfile;
	myfile.open("Eppapeli.txt");
	if (myfile.is_open())
	{
		for (int i = 0; i < 10; i++)
		{
			if (i != 10 - 1)
			{
				myfile << rows[i] + "\n";
			}
			else
			{
				myfile << rows[i];
			}
		}
		myfile.close();
	}

	int a;
	std::cin >> a;

	return 0;
}
}*/

#include <iostream>
#include <string>
#include <vector>
#include <bitset>

using namespace std;

int main()
{
	const int MAX_CHAR = 64;

	unsigned int subCount = 0;
	string bitSeq = "1";

	unsigned int k = 0;
	std::cin >> k;

	if (k == 0)
	{
		std::cout << "\n";
	}
	else if (k == 1)
	{
		std::cout << 0 << "\n";
	}
	else
	{
		if (k > 999)
		{

			unsigned int l = 1;
			while (subCount < k)
			{
				if (l % 2)
				{
					bitSeq += '0';
				}
				else
				{
					bitSeq += '1';
				}
				l++;
				vector<unsigned int>last(MAX_CHAR, -1);

				const unsigned int n = bitSeq.length();

				unsigned int* dp = new unsigned int[n + 1];
				dp[0] = 1;

				for (unsigned int o = 1; o <= n; o++)
				{
					dp[o] = 2 * dp[o - 1];

					if (last[bitSeq[o - 1]] != (unsigned int) - 1)
					{
						dp[o] = dp[o] - dp[last[bitSeq[o - 1]]];
					}

					last[bitSeq[o - 1]] = (o - 1);
				}
				vector<unsigned int>().swap(last);
				subCount = dp[n] - 1;
				dp = 0;
			}
			l--;
			if (bitSeq[l] == '1')
			{
				l--;
			}
			while (subCount > k)
			{
				bitSeq[l] = '1';

				vector<unsigned int>last(MAX_CHAR, -1);

				const unsigned int n = bitSeq.length();

				unsigned int* dp = new unsigned int[n + 1];
				dp[0] = 1;

				for (unsigned int o = 1; o <= n; o++)
				{
					dp[o] = 2 * dp[o - 1];

					if (last[bitSeq[o - 1]] != (unsigned int) - 1)
					{
						dp[o] = dp[o] - dp[last[bitSeq[o - 1]]];
					}

					last[bitSeq[o - 1]] = (o - 1);
				}
				vector<unsigned int>().swap(last);
				subCount = dp[n] - 1;
				l -= 2;
			}

			subCount = 0;
		}

		unsigned int l = bitSeq.length();
		while (subCount != k)
		{
			for (unsigned int b = l - 1; b >= 0; b--)
			{
				if (bitSeq[b] != '1')
				{
					bitSeq[b] = '1';
					for (unsigned int c = b + 1; c < l; c++)
					{
						bitSeq[c] = '0';
					}
					break;
				}
				else if (b == 0)
				{
					bitSeq = "1";
					bitSeq += string(l, '0');
					l++;
					break;
				}
			}

			string reverseBits = bitSeq;
			reverse(reverseBits.begin(), reverseBits.end());
			reverseBits = reverseBits.substr(reverseBits.find("1", 0));
			if (reverseBits <= bitSeq)
			{

				const unsigned int n = l;

				vector<unsigned int>last(MAX_CHAR, -1);

				unsigned int* dp = new unsigned int[n + 1];
				dp[0] = 1;

				for (unsigned int o = 1; o <= n; o++)
				{
					dp[o] = 2 * dp[o - 1];

					if (last[bitSeq[o - 1]] != (unsigned int)-1)
					{
						dp[o] = dp[o] - dp[last[bitSeq[o - 1]]];
					}

					last[bitSeq[o - 1]] = (o - 1);
				}
				vector<unsigned int>().swap(last);
				subCount = dp[n] - 1;
			}
		}
		std::cout << bitSeq << "\n";
	}

	unsigned int a;
	std::cin >> a;
	return 0;
}