题解

#include<bits/stdc++.h>
using namespace std;
int a[666][666],b,c;
int main(){
    cin>>b;
    for(int i=1;i<=b;i++){
        for(int j=i;j<=b*b;j+=b){
            cout<<j<<" ";
        }
        cout<<"\n";
    }
    return 0;
}