#include <iostream>
using namespace std;
int enter(int max, int min) {
    int temp = 0;
    bool iscorrect;
    do {
        cin >> temp;
        if ((temp > min - 1) && (temp < max + 1)) {
            iscorrect = false;  }
        else {
            cout << "This is a mistake. Please enter again!";
            iscorrect = true;
        }
    }
    while (iscorrect);
    return temp;
}
int main() {
   int matrix1[10][10];
   int matrix2[10][10];
   int flag;
   int n;
   cout << "Enter the number of rows and columns in the matrix (N > 1 and N < 11) = ";
   n = enter(10,2);
   cout << "Enter the elements of first matrix a";
   for (int i = 0; i < n; i++) {
       for (int j = 0; j < n; j++ ) {
           cout << "Enter a[" << i + 1 << "," << j + 1 << "] = ";
           matrix1[i][j] = enter(200000,-200000);
       }
   }
   cout << "Enter the elements of first matrix b";
   for (int i = 0; i < n; i++) {
       for (int j = 0; j < n; j++ ) {
           cout << "Enter b[" << i + 1 << "," << j + 1 << "] = ";
           matrix2[i][j] = enter(200000,-200000);
       }
   }
   cout << "Enter 1 for sum or 2 for subtract matrices ";
   flag = enter(2,1);
   if (flag == 1) {
       for (int i = 0; i < n; i++) {
           for (int j = 0; j < n; j++ ) {
               matrix1[i][j] = matrix1[i][j] + matrix2[i][j];
           }
       }
   }
   else {
       for (int i = 0; i < n; i++) {
           for (int j = 0; j < n; j++ ) {
               matrix1[i][j] = matrix1[i][j] - matrix2[i][j];
           }
       }
   }
   cout << "New matrix";
    for (int i = 0; i < n; i++) {
        cout << "\n";
        for (int j = 0; j < n; j++ ) {
            cout << matrix1[i][j] << "  ";
        }
    }
   return 0;
}