#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,a[21][21]; cin>>n; for(int i=0;i<n;i++){ for(int j=0;j<n;j++){ if(j<i) a[i][j]=j+1; if(j>=i) a[i][j]=i+1; } } for(int i=0;i<n;i++){ for(int j=0;j<n;j++){ cout<<a[i][j]<<" "; } cout<<endl; } return 0;