#include<bits/stdc++.h> using namespace std; const int N=1010; int a[N][N]; int main() { int n; cin>>n; for(int q=1;q<=n;q++){ for(int w=1;w<=n;w++){ int z=min(min(q,w),min(n-q+1,n-w+1)); cout<<z; } cout<<endl; } return 0; }
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