刷刷小水题~~~

#include <iostream>
#include <cstdio>
using namespace std;
typedef long long ll;
ll n;
int main()
{
    for(;scanf("%lld",&n)&&n;)
    {
        for(ll i=1;i<=n;i++)
        {
            for(ll j=1;j<=n;j++)printf("%lld ",min(min(i,j),min(n-i+1,n-j+1)));
            printf("\n");
        }
        printf("\n");
    }
    return 0;
}