Sum of Two Nim Game

#include<bits/stdc++.h>

using namespace std;

int main()

{

    int n, m;

    cout << "Enter First Game Piles Number : ";

    cin >> n;

    cout << "Enter Second Game Piles Number : ";

    cin >> m;

    int p[n+m], xor_sum = 0;

    cout << "Enter First Game Each Piles Stone Number : ";

    for(int i=0; i<n; i++)

    {

        cin >> p[i];

        xor_sum ^= p[i];

    }

    cout << "Enter Second Game Each Piles Stone Number : ";

    for(int i=n; i<n+m; i++)

    {

        cin >> p[i];

        xor_sum ^= p[i];

    }

    if(xor_sum > 0)

        cout << "First Player Win." << "\n";

    else

        cout << "Second Player Win." << "\n";

    return 0;

}