Forever Winter
A snowflake graph is generated from two integers x and y, both greater than 11, as follows:
- Start with one central vertex.
- Connect x new vertices to this central vertex.
- Connect y new vertices to each of these x vertices.

The snowflake graph above has a central vertex 1515, then x=5=5 vertices attached to it (33, 66, 77, 88, and 2020), and then y=3=3 vertices attached to each of those.
The first line contains a single integer t (1≤t≤10001≤≤1000) — the number of test cases.
The first line of each test case contains two integers n and m (2≤n≤2002≤≤200; 1≤m≤min(1000,n(n−1)2)1≤≤min(1000,(−1)2)) — the number of vertices and edges in the graph, respectively.
The next m lines each contain two integers each u and v (1≤u,v≤n1≤,≤, u≠v≠) — the numbers of vertices connected by an edge. The graph does not contain multiple edges and self-loops.
It is guaranteed that this graph is a snowflake graph for some integers x and y both greater than 11.
For each test case, on a separate line output the values of x and y, in that order, separated by a space.
The first test case is pictured in the statement. Note that the output 3 5 is incorrect, since x should be output before y.
__EOF__

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