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

A. Hongcow Builds A Nation

time limit per test

2 secondsmemory limit per test

256 megabytesinput

standard inputoutput

standard outputHongcow is ruler of the world. As ruler of the world, he wants to make it easier for people to travel by road within their own countries.

The world can be modeled as an undirected graph with *n* nodes and *m* edges. *k* of the nodes are home to the governments of the *k* countries that make up the world.

There is at most one edge connecting any two nodes and no edge connects a node to itself. Furthermore, for any two nodes corresponding to governments, there is no path between those two nodes. Any graph that satisfies all of these conditions is stable.

Hongcow wants to add as many edges as possible to the graph while keeping it stable. Determine the maximum number of edges Hongcow can add.

Input

The first line of input will contain three integers *n*, *m* and *k* (1 ≤ *n* ≤ 1 000, 0 ≤ *m* ≤ 100 000, 1 ≤ *k* ≤ *n*) — the number of vertices and edges in the graph, and the number of vertices that are homes of the government.

The next line of input will contain *k* integers *c*_{1}, *c*_{2}, ..., *c*_{k} (1 ≤ *c*_{i} ≤ *n*). These integers will be pairwise distinct and denote the nodes that are home to the governments in this world.

The following *m* lines of input will contain two integers *u*_{i} and *v*_{i} (1 ≤ *u*_{i}, *v*_{i} ≤ *n*). This denotes an undirected edge between nodes *u*_{i} and *v*_{i}.

It is guaranteed that the graph described by the input is stable.

Output

Output a single integer, the maximum number of edges Hongcow can add to the graph while keeping it stable.

Examples

Input

4 1 2

1 3

1 2

Output

2

Input

3 3 1

2

1 2

1 3

2 3

Output

0

Note

For the first sample test, the graph looks like this:

For the second sample test, the graph looks like this:

Codeforces (c) Copyright 2010-2017 Mike Mirzayanov

The only programming contests Web 2.0 platform

Server time: Mar/27/2017 15:37:41 (p1).

Desktop version, switch to mobile version.
User lists

Name |
---|