ain(){ c#include <iostream> using namespace std; int mout<<""<<endl; cout<<""<<endl; cout<<""<<endl; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ cout<<"*\n **\n ***\n"; return 0; }

#include <bits/stdc++.h> using namespace std; int main(){ cout<<""<<endl<<""<<endl<<""<<endl; return 0; }