1698A - XOR Mixup - CodeForces Solution

#include <bits/stdc++.h>
using namespace std;

#define endl '\n'
#define no cout << "NO" << endl
#define yes cout << "YES" << endl

typedef long long ll;
typedef unsigned long long ull;
typedef long double lld;

#ifndef ONLINE_JUDGE
#define debug(x) cerr << #x <<" "; _print(x); cerr << endl;
#else
#define debug(x)
#endif


void _print(ll t) {cerr << t;}
void _print(int t) {cerr << t;}
void _print(string t) {cerr << t;}
void _print(char t) {cerr << t;}
void _print(lld t) {cerr << t;}
void _print(double t) {cerr << t;}
void _print(ull t) {cerr << t;}


void solve()
{
   int x;
   cin>>x;

   int ans ;
   cin>>ans;
   x--;
    int k;

   while (x--)
   {
    cin>>k;
   }

   cout<<k<<endl;
   
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int tc;
    cin >> tc;
    while (tc--)
    solve();
}