Verificarea egalitatii a doua matrice

// 1. Se dau 2 matrice cu n linii si m coloane. Verificati daca cele doua matrice sunt egale.
#include <iostream>
using namespace std;
int main()
{
    int a[100][100], b[100][100], i, j, n, m, ok(0);
    cin >> n >> m;
    for(i = 1; i <= n; i++)
        for(j = 1; j <= m; j++)
            cin >> a[i][j];
    for(i = 1; i <= n; i++)
        for(j = 1; j <= m; j++)
            cin >> b[i][j];
    for(i = 1; i <= n; i++)
        for(j = 1; j <= m; j++)
            if(a[i][j] == b[i][j])
                ok = 1;
            else ok = 0;
    if(ok)
        cout << "Matricele sunt egale.";
    else cout << "Matricele nu sunt egale.";
    return 0;
}