为什么TLE?( 求助大神:( )

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,sum = 0;
    int lie = 0;
    cin >> n;
    int x,jo;
    while(sum < n * n)
    {
    	cin >> x;
    	jo ++;
    	if(jo % 2 == 1)
    	{
    		for(int i = 1;i <= x;i++)
    		{
    			if(lie < n)
    			{
    				cout<< 1;
    				lie ++;
				}
				else
				{
					lie = 0;
					cout<<endl;
					cout<<1;
					lie++;
				}
			}
		}
		else
		{
			for(int i = 1;i <= x;i++)
    		{
    			if(lie < n)
    			{
    				cout<< 0;
    				lie ++;
				}
				else
				{
					lie = 0;
					cout<<endl;
					cout<<0;
					lie++;
				}
			}
		}
	}
}