#include <iostream>
#include <vector>

using namespace std;

class matrix
{
public:
    int n, m;
    int a[100][100];
    void enter_the_matrix()
    {
        cout << "Enter size of matrix: " << endl; //введите размер матрицы

        cin >> n >> m;
        cin.ignore();
        cout << "Enter the matrix: " << endl; //введите матрицу
        for (int i = 0; i < n; i++)
        {
            for (int j = 0; j < m; j++)
            {

                cin >> a[i][j];
                cin.ignore();
            }
        }
    }
    void addition_matrix(matrix A, matrix B)
    {
        if (A.n != B.n || A.m != B.m)
        {
            cout << "addition imposible" << endl; //cложение невозможно
            return;
        }
        for (int i = 0; i < A.n; i++)
        {
            for (int j = 0; j < A.m; j++)
            {
                a[i][j] = A.a[i][j] + B.a[i][j];
                cout << a[i][j] << " ";
            }
            cout << endl;
        }
    }
    void multiplication_matrix(matrix A, matrix B)
    {
        if (A.m != B.n)
        {
            cout << "multiplication imposible" << endl; //умножение невозможно
            return;
        }
        for (int i = 0; i < A.n; i++)
        {
            for (int j = 0; j < B.m; j++)
            {
                int s = 0;
                for (int k = 0; k < B.n; k++)
                {
                    s += A.a[i][k] * B.a[k][j];
                }
                a[i][j] = s;
                cout << s << " ";
            }
            cout << endl;
        }
    }
    void out_matrix()
    {
        for (int i = 0; i < n; i++)
        {
            for (int j = 0; j < m; j++)
            {
                cout << a[i][j] << " ";
            }
            cout << endl;
        }
    }
};

int main()
{
    matrix A, B;
    A.enter_the_matrix();
    B.enter_the_matrix();
    matrix C;
    cout << " Summ of matrixes" << endl; //cумма матриц
    C.addition_matrix(A, B);
    cout << " Composition of matrixes" << endl; //произведение матриц
    C.multiplication_matrix(A, B);
    system("pause");
    return 0;
}