// Q947968.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

#include <stdio.h>

int main(int argc, char* argv[])
{
    int n;
    scanf("%d", &n);
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            if (i == 0 || i == n - 1 || j == 0 || j == n - 1) printf("O");
            else if (i == 1 || i == n - 2 || j == 1 || j == n - 2) printf("J");
            else printf("%d", i - 1);
        }
        printf("\n");
    }
    return 0;
}

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