Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ACM-ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.

No tag edit access

E2. Daleks' Invasion (medium)

time limit per test

15 secondsmemory limit per test

256 megabytesinput

standard inputoutput

standard outputAfter a successful field test, Heidi is considering deploying a trap along some Corridor, possibly not the first one. She wants to avoid meeting the Daleks inside the Time Vortex, so for abundance of caution she considers placing the traps only along those Corridors that are not going to be used according to the current Daleks' plan – which is to use a minimum spanning tree of Corridors. Heidi knows that all energy requirements for different Corridors are now different, and that the Daleks have a single unique plan which they are intending to use.

Your task is to calculate the number $$$E_{max}(c)$$$, which is defined in the same way as in the easy version – i.e., the largest $$$e \le 10^9$$$ such that if we changed the energy of corridor $$$c$$$ to $$$e$$$, the Daleks might use it – but now for every corridor that Heidi considers.

Input

The first line: number $$$n$$$ of destinations, number $$$m$$$ of Time Corridors ($$$2 \leq n \leq 10^5$$$, $$$n - 1 \leq m \leq 10^6$$$). The next $$$m$$$ lines: destinations $$$a$$$, $$$b$$$ and energy $$$e$$$ ($$$1 \leq a, b \leq n$$$, $$$a \neq b$$$, $$$0 \leq e \leq 10^9$$$).

No pair $$$\{a, b\}$$$ will repeat. The graph is guaranteed to be connected. All energy requirements $$$e$$$ are distinct.

Output

Output $$$m-(n-1)$$$ lines, each containing one integer: $$$E_{max}(c_i)$$$ for the $$$i$$$-th Corridor $$$c_i$$$ from the input that is not part of the current Daleks' plan (minimum spanning tree).

Example

Input

3 3

1 2 8

2 3 3

3 1 4

Output

4

Note

If $$$m = n-1$$$, then you need not output anything.

Codeforces (c) Copyright 2010-2019 Mike Mirzayanov

The only programming contests Web 2.0 platform

Server time: Aug/21/2019 09:03:24 (g1).

Desktop version, switch to mobile version.

Supported by

User lists

Name |
---|