#include<iostream>
using namespace std;
int main() {
    int n;
    cin>>n;
    
    int count=1;
    for(int i=1;i<=n;i++) {
        for(int j=1;j<=i;j++) {
            cout<<count<<" ";
            count++;
        }
        cout<<endl;
    }
    return 0;
}