Hello CF Community,

I am new to competitive programming and recently have been learning STL ,I wanted to ask that if i want to erase the smallest value and also keep on iterating, if I am writing the following code, I am getting garbage values.

I know that there are other ways to do this but I wanted a modification of my code ,and also I wanted to know that is it not possible to traverse set while simultaneously erasing elements.

set <int> s;
s.insert(1);s.insert(2);s.insert(3);
for(auto it=s.begin();it!=s.end();it++)
{
    cout<<*it<<endl;
    s.erase(it);
}