纯模拟

#include<bits/stdc++.h>
using namespace std;
(不提供快读)
void write(int x) {
	if(x<0){
		putchar('-');
		write(-x);
		return;
	}
	if(x>=10)write(x/10);
	putchar(x%10+'0');
}
int i,j,a[100005],n;
int main()
{
   n=read();
   for(i=2;i<=n;i++)
      for(j=i;j<=n;j+=i)a[j]=!a[j];
   for(i=1;i<=n;i++)cout<<a[i];
 	return 0;
}