#include "Matrix.h"
#include 
#include 
using namespace std;

int main(){
  int r1, c1, r2, c2;
  double num;
  while(cin >> r1 >> c1){
    vector  coef1, coef2;
    for(int i=0; i> num;
      coef1.push_back(num);
    }
    Matrix m1(r1, c1, coef1);
    cin >> r2 >> c2;
    for(int i=0; i> num;
      coef2.push_back(num);
    }
    Matrix m2(r2, c2, coef2);
    if(m1.isAddable(m2)){
      Matrix res = m1+m2;
      cout << "m1 + m2=" << endl;
      res();
    }else{
      cout << "m1 and m2 are not addable." << endl;
    }
    if(m1.isSubstractable(m2)){
      Matrix res = m1-m2;
      cout << "m1 - m2=" << endl;
      res();
    }else{
      cout << "m1 and m2 are not substractable." << endl;
    }
    if(m1.isMultipliable(m2)){
      Matrix res = m1*m2;
      cout << "m1 * m2=" << endl;
      res();
    }else{
      cout << "m1 and m2 are not multipliable." << endl;
    }
  }
  return 0;
}