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