#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[11][11],k=1; cin>>n; for(int i=1;i<=n;i++){ if(i%2==0){ for(int j=n;j>=1;j--){ a[j][i]=k++; cout<<a[j][i]<<" "<<endl; } } else{ for(int j=1;j<=n;j++){ a[j][i]=k++; cout<<a[j][i]<<" "<<endl; } } } return 0; }