题解

#include <bits/stdc++.h>
using namespace std;

int main(){
	int n,cnt = 1;
	cin  >> n;
	for(int i = 1;i <= n;i++){
		for(int j = 1;j <= n;j++){
			cout << cnt << " ";
			cnt++;
		}
		cout << endl;
	}
	return 0;
}