#include <bits/stdc++.h>
int main(){int n,m;std::cin>>n>>m;n*=2;m*=2;int b[n+10][m+10]{};int c[n+10][m+10]{};for(int i=1;i<=n;i++){for(int j=1;j<=m;j++){std::cin>>b[i][j];if(j%2==0){b[i][j-1]+=b[i][j];}}if(i%2==0){for(int j=1;j<=m;j++){b[i-1][j]+=b[i][j];}}}for(int i=1;i<=m;i+=2){for(int j=1;j<=n;j+=2){std::cout<<b[j][i]<<" ";}std::cout<<std::endl;}}