Here are the solution of Sets-STL in C++ Hacker Rank Solution

Here is problem solution - https://thecscience.com/hackerrank-sets-stl-in-cpp-problem-solution.html

Here is the Solution of Sets-STL in C++ HackerRank Solution https://www.brokenprogrammers.com/sets-stl-in-cpp-hackerrank-solution

Here is problem solution - https://thecscience.com/hackerrank-sets-stl-in-cpp-problem-solution.html

include

include

include

include

include

include

using namespace std;

int main() { /* Enter your code here. Read input from STDIN. Print output to STDOUT */

int n;
cin>>n;

set<int> s;

while(n--){
    int a,b;
    cin>>a>>b;
    if(a==1){
        s.insert(b);
    }
    else if(a==2){
        s.erase(b);
    }
    else if(a==3){
        set<int>::iterator itr = s.find(b);
        if(itr!=s.end()){
            cout<<"Yes"<<endl;
        }
        else{
            cout<<"No"<<endl;
        }
    }
}

return 0;

}