#pragma GCC optimize("O3") #pragma GCC target("popcnt") #pragma GCC target("avx,avx2,fma") #pragma GCC optimize("Ofast,unroll-loops") #include <bits/stdc++.h> #include <ext/pb_ds/tree_policy.hpp> #include <ext/pb_ds/assoc_container.hpp> using namespace __gnu_pbds; using namespace std; #define ll long long const ll INF_MUL=1e13; const ll INF_ADD=1e18; #define pb push_back #define mp make_pair #define nline "\n" #define f first #define s second #define pll pair<ll,ll> #define all(x) x.begin(),x.end() #define vl vector<ll> #define vvl vector<vector<ll>> #define vvvl vector<vector<vector<ll>>> #ifndef ONLINE_JUDGE #define debug(x) cerr<<#x<<" "; _print(x); cerr<<nline; #else #define debug(x); #endif void _print(ll x){cerr<<x;} void _print(char x){cerr<<x;} void _print(string x){cerr<<x;} mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); template<class T,class V> void _print(pair<T,V> p) {cerr<<"{"; _print(p.first);cerr<<","; _print(p.second);cerr<<"}";} template<class T>void _print(vector<T> v) {cerr<<" [ "; for (T i:v){_print(i);cerr<<" ";}cerr<<"]";} template<class T>void _print(set<T> v) {cerr<<" [ "; for (T i:v){_print(i); cerr<<" ";}cerr<<"]";} template<class T>void _print(multiset<T> v) {cerr<< " [ "; for (T i:v){_print(i);cerr<<" ";}cerr<<"]";} template<class T,class V>void _print(map<T, V> v) {cerr<<" [ "; for(auto i:v) {_print(i);cerr<<" ";} cerr<<"]";} typedef tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> ordered_set; typedef tree<ll, null_type, less_equal<ll>, rb_tree_tag, tree_order_statistics_node_update> ordered_multiset; typedef tree<pair<ll,ll>, null_type, less<pair<ll,ll>>, rb_tree_tag, tree_order_statistics_node_update> ordered_pset; //-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- const ll MOD=999983; const ll MAX=1<<20; void solve(){ ll n; cin>>n; vector<ll> freq(5,0); ll x=n/2; for(ll i=1;i<=n;i++){ ll y; cin>>y; freq[y%2]+=y; } if((freq[0]+freq[1])%(n/2)){ cout<<"NO\n"; return; } if(((freq[0]+freq[1])/(n/2))%2==0){ cout<<"NO\n"; return; } cout<<"YES\n"; return; } int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); #ifndef ONLINE_JUDGE freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); freopen("error.txt", "w", stderr); #endif ll test_cases=1; cin>>test_cases; while(test_cases--){ solve(); } cout<<fixed<<setprecision(10); cerr<<"Time:"<<1000*((double)clock())/(double)CLOCKS_PER_SEC<<"ms\n"; }