from what I understand in this code the pointer p points to memory address 0x64ff but when trying to put a value there gives runtime error how to solve that problem? I know this has nothing to do with competitive, sorry

#pragma GCC Optimize("Ofast", "O2")
#pragma GCC target("avx2", "avx")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#ifdef LOCAL
#include <windows.h>
#endif
#define Tree tree<ll, null_type, less_equal<ll>, rb_tree_tag, tree_order_statistics_node_update>
#define INF 1LL << 62
#define ll long long
#define F first
#define S second
using namespace std;
using namespace __gnu_pbds;

int* p = (int*)(0x64ff); 

signed main()
{
}