#include<iostream>
using namespace std;

int main() {

    int n;
    cin>>n;

    for (int i=1; i<=n; i++) {
        for (int j=1; j<=i; j++) {
            if ((i+j) % 2 == 0) {
                cout<<"1"<<" ";
            }
            else {
                cout<<"0"<<" ";
            }
        }
        cout<<endl;
    }
    return 0;
}