#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 a[110][110],n,m,c=1; cin>>n; for(int i=1;i<=n;i++){ for(int j=1;j<=n;j++){ if(i==c||j==c){ a[i][j]=c; } cout<<a[i][j]<<" "; } c++; cout<<endl; } return 0; }