cpp
#include <iostream>
#include <vector>

using namespace std;

cpp
#include <iostream>
#include <cstdio>
usin

P1319

cpp
#include<cstdio>
#include<iostream>
#include<cstring>
using namespace std;
int n,a,tot,sum;
int main()
{
	int tot = 0;
	scanf("%d",&n);
	while(scanf("%d",&a) != EOF)//输入 
	{
		if(tot % 2 == 0)//到输出0这个操作 
		{
			for(int i = 1;i <= a;i++)
			{
				printf("0"); 
				sum++;//记录一行的个数，不能超过n个 
				if(sum == n)//如果超过n个，就换行 
				{
					printf("\n");
					sum = 0;
				}
			}
			tot++;//下一个操作 
		}
		else//反之 
		{   
		    for(int i = 1;i <= a;i++)
			{
				printf("1");
				sum++;
				if(sum == n)
				{
					printf("\n");
					sum = 0;
				}
			}
			tot++;
		}
	}
	return 0;
}

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