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