import java.util.*;

public class Matrix{
    public int[] arr;
    public int n;
    public int m;

    public Matrix(int[] a, int n, int m){
        this.arr = a;
        this.n = n;
        this.m = m;
    }
    public Matrix add(Matrix m){
        if(m.arr.length != this.arr.length){
            System.out.println("Invalid Add");
            return null;
        }
        int[] narr = new int[arr.length];
        for(int i = 0; i < arr.length; i++){
            narr[i] = arr[i] + m.arr[i];
        }
        Matrix tmp = new Matrix(narr, this.n, this.m);
        return tmp;
    }
    public void print(){
        for(int i = 0; i < n; i++){
            for(int j = 0; j < m; j++){
                System.out.print(arr[i * m + j]);
                System.out.print(" ");
            }
            System.out.println();
        }
    }
}