For this Question: You were gifted an array Arr of N integers for your last birthday. You want to play with that array but the last element of the array is missing. All you remember is that the xor of all the elements of the array was zero. Print the maximum possible value of the last element.First line of input contains N.
Second line of input contains first N-1 elements of the array Arr that you remember.

Constraints 
2 <= N <= 100000
0 <= Arr[i] <= 1000000000Print the maximum possible value of the last element.Sample input
5
1 5 1 3 

Sample output
6

Explanation : 
(1 ^ 5 ^ 1 ^ 3 ^ 6 ) = 0 and 6 is maximum such possible number, I have written this Solution Code: #include<bits/stdc++.h>
using namespace std;
#define ll long long
#define VV vector
#define pb push_back
#define bitc  __builtin_popcountll
#define m_p make_pair
#define infi 1e18+1
#define eps 0.000000000001
#define fastio ios_base::sync_with_stdio(false);cin.tie(NULL);
string char_to_str(char c){string tem(1,c);return tem;}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
template<class T>//usage rand<long long>()
T rand() {
    return uniform_int_distribution<T>()(rng);
}
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
 
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> oset;
// string to integer stoi()
// string to long long stoll()
// string.substr(position,length);
// integer to string to_string();
 
//////////////
auto clk=clock();
#define all(x) x.begin(),x.end()
#define S second
#define F first
#define sz(x) ((long long)x.size())
#define int long long  
#define f80 __float128
#define pii pair<int,int>
/////////////
signed main()
{
	fastio;
	#ifdef ANIKET_GOYAL
		freopen("inputf.in","r",stdin);
		freopen("outputf.in","w",stdout);
	#endif
	int n;
	cin>>n;
	int x=0;
	for(int i=1;i<n;++i)
	{
		int d;
		cin>>d;
		x^=d;
	}
	cout<<x;
	#ifdef ANIKET_GOYAL
		// cout<<endl<<endl<<endl<<endl<<"Time elapsed: "<<(double)(clock()-clk)/CLOCKS_PER_SEC<<endl;
	#endif
}, In this Programming Language: C++, Now tell me if this Code is compilable or not?