func_code_string: #include <bits/stdc++.h>   #pragma GCC optimize( unroll-loops )   #pragma GCC optimize( O3 ,  omit-frame-pointer ,  inline )   #pragma GCC target(         sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native )   using namespace std;   const long long mod = 998244353;   mt19937 rng((int)chrono::steady_clock::now().time_since_epoch().count());   const int mxN = 5010;   int main(int argc, char *argv[]) {     ios_base::sync_with_stdio(false);     cin.tie(nullptr);     srand(time(NULL));     cout << fixed << setprecision(9);     int t = 1;     while (t--) {       int n;       cin >> n;       vector<int> a(n);       for (int i = 0; i < n; i++) cin >> a[i];       vector<int> e;       for (int i = 0; i < n; i++) {         if (!e.empty() && e.back() % 2 == a[i] % 2)           e.pop_back();         else           e.push_back(a[i]);       }       cout << (e.size() <= 1 ?  YES  :  NO ) <<   n ;     }     return 0;   }   