C++ 백준 1436번 영화감독 숌

#include<iostream>
#include<vector>
#include<stack>
#include<algorithm>
#include<cmath>
#include<queue>
#include<string>
using namespace std;



int main()
{
	
	int N;
	cin >> N;
	
	int ans = 0;
	string a;
	int cal=0;
	
	int i = 1;
	while (1)
	{
		
		

		a = to_string(i);
		
		if(a.find("666")!=string::npos)
		{
			ans++;
		}
		
		
		if (ans == N)
		{
			cout << i << endl;
			break;
		}

		i++;
		
	}
	

	




	return 0;

}