Merge by rank with the check set

The first question of Geely's lecture is that I hear a face. It's hopeless.

Then consulted a bit ika, probably understand is the time axis division and then by the rank merger, came back to learn the next.

POJ2492

Portal: http://poj.org/problem?id=2492

Wait, why should I write this question?

This problem, not by rank also can a ah ....

15444012	Wxx_louisa	2492	Accepted	192K	750MS	C++	784B	2016-04-27 19:26:42
15444008	Wxx_louisa	2492	Accepted	200K	782MS	C++	856B	2016-04-27 19:25:55

BZOJ4025

Do not know why now used to go to the first to see the number of AC, only 100 more people are a bit empty.

The feeling is with the courseware in the picks loves segments tree problem is similar, are only maintenance for a period of time inserted and then repair, heard that the repair is more than the removal of good operation.

After the code, go back to sleep ... Tomorrow, two try refueling rp++!

Merge by rank with the check set