#include using namespace std; #include #include #include #include #include template inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } #define rep(i,n) for (int i = 0; i < (n); ++i) typedef long long ll; typedef unsigned long long ull; using P=pair; const int INF=1001001001; const ll INFL=1e18; const int mod=998244353; void solve(){ int n; cin>>n; vectora(n); rep(i,n)cin>>a[i]; ll sum=accumulate(a.begin(),a.end(),0ll); if(sum%3!=0){ cout<<"NO"<=mid*3; }; int l=0,r=200005; while(r-l>1){ int mid=(l+r)/2; if(f(mid)){l=mid;} else{r=mid;} } cout<<(l==sum/3?"YES":"NO")<>t; rep(i,t){ solve(); } return 0; }