#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ /* int n,max=-1,sum=0,i; cin>>n; int a[n]; for(i=0;i<n;i++){ cin>>a[i]; if(a[i]>max){ max=a[i]; }else if(a[i]<max){ sum+=1; } } cout<<sum; */ int n,i,j,k; cin>>n; int a[n][n]; for(k=0;k<n;k++){ for(i=k;i<=n-k-1;i++){ for(j=k;j<=n-k-1;j++){ a[i][j]=k+1; } } } for(i=0;i<n;i++){ for(j=0;j<n;j++){ cout<<a[i][j]<<" "; } cout<<endl; } return 0; }