I am getting TLE Error

1

Problem Code: TREE2

Code

int main() {
    ios_base::sync_with_stdio(false);
     cin.tie(NULL);

   int t;cin>>t;

   while(t--) {
   		int n,c=0;cin>>n;
   		vector<int> v(n);
   		for(int i=0;i<n;i++) {
   			cin>>v[i];
   		}

   		vector<int> a;
   		sort(v.begin(), v.end());
   		for(int i=0;i<n;i++) {
   			if((v[i]!=v[i+1]) && (v[i]!=0)) { 
   				a.push_back(v[i]);
   			}
   		}
   		int size_a = a.size();


		ll d=1;
		for(int i=(size_a-2);i>=0;i--) {
			int sc = a[i];
			for(int j=i+1;j<size_a;j++) {
				a[j] = sc;
			}
			d++;
		}
		cout<<d;
   }

   return 0;
}