#include using namespace std; string canConstruct(vector a) { // Return "Yes" or "No" denoting whether you can construct the required number. vector ::iterator i; int sum=0,sum1=0,n,k; for(i=a.begin();i!=a.end();i++) { sum=sum+*i; } n=sum; while(n) { k=n%10; sum1=sum1+k; n=n/10; } if(sum1%3==0) return "Yes"; else return "No"; } int main() { int t; cin >> t; for(int a0 = 0; a0 < t; a0++){ int n; cin >> n; vector a(n); for(int a_i = 0; a_i < n; a_i++){ cin >> a[a_i]; } string result = canConstruct(a); cout << result << endl; } return 0; }