In biology class, Andy is playing around with a tree. The tree, of course, has
The following two operations can be performed:
1 u v
means Andy will cut the branch connecting node and node .2
means Andy will use magic glue to glue all the branches back to where they were cut off, or, in other words, restore the tree to what it initially was.
Every vertex
The power of a connected component of vertices is the product of all powers of the vertices in the connected component.
The power of a set of connected components is the sum of the powers of all connected components in the set.
Before every 2
operation, Andy wants to know the total power of all connected components.
Constraints
For all subtasks:
It is guaranteed that no edge will be cut twice before restoring the tree.
It is guaranteed that the edge being cut is an edge found in the tree.
It is guaranteed that the last operation will be operation 2
.
Subtask 1 [10%]
Only the last operation will be operation 2
.
Subtask 2 [90%]
No additional constraints.
Input Specification
The first line contains an integer
The second line contains
The following
The next line contains an integer
The following
Output Specification
For every 2
operation, output the total power of connected components. Since the result could be large, output the result modulo
Sample Input
8
1 2 3 4 5 6 7 8
1 4
4 7
5 2
5 8
6 8
1 3
5 1
6
2
1 5 8
2
1 1 4
1 6 8
2
Sample Output
40320
888
274
Sample Explanation
During the first 2
operation, there is only one connected component, so the tree's power is
During the second 2
operation, the tree's power is
During the third 2
operation, the tree's power is
Comments