HOW TO DO IT

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@tpb @jonnin
Can someone explain me how to approach this problem https://www.codechef.com/LOCJUL18/problems/COLCHEF

I solved the subpart using maps but getting TLE for the last subtask I think
there should be an easier solution than this

Can someone explain how to do this in c++

connect
1,2
3,4
5,6


then there is path between


1->2
3->4
5->6



now connect 2 and 3


so the whole path gets connects

but 5->6 remains disconnected and then we can check if 1 is connected to 4 or not



1->2->3->4
5->6