#include <iostream>
#include <vector>
using namespace std;
class matrice {
 public:
  vector<vector<int>> a;
  int line, coloana;
  friend matrice operator+(matrice m1, matrice m2);
   void afisare(matrice m);
};

matrice operator+(matrice m1, matrice m2) {
  matrice s;
  s.line = m1.line;

  s.coloana = m1.coloana;
  for (int i = 0; i < m1.a.size(); i++) {
    vector<int> temp;
    for (int j = 0; j < m1.a[i].size(); j++) {
      temp.push_back(m1.a[i][j] + m2.a[i][j]);
    }
    s.a.push_back(temp);
  }
  return s;
}

void afisare(matrice m) {
  for (int i = 0; i < m.a.size(); i++) {
    for (int j = 0; j < m.a[i].size(); j++) {
      cout << m.a[i][j] << " ";
    }
    cout << endl;
  }
}

int main() {
  // mesaj citire matrice 1
  matrice m1;
  cin >> m1.line >> m1.coloana;
  for (int i = 0; i < m1.line; i++) {
    vector<int> aux;
    for (int j = 0; j < m1.coloana; j++) {
      int n;
      cin >> n;
      aux.push_back(n);
    }
    m1.a.push_back(aux);
  }

// mesaj citire matrice 2
  matrice m2;
  cin >> m2.line >> m2.coloana;
  for (int i = 0; i < m2.line; i++) {
    vector<int> aux;
    for (int j = 0; j < m2.coloana; j++) {
      int n;
      cin >> n;
      aux.push_back(n);
    }
    m2.a.push_back(aux);
  }
  // mesaj afisare rezultat adunare matrice 1 + matrice 2
  matrice m;
  m = m1 + m2;
  afisare(m);
}