#5529. Water Containers Moves
Water Containers Moves
Water Containers Moves
There are two water containers: container A has volume a and container B has volume b. Your want to measure x units of water using the containers. Initially both containers are empty. On each move, you can fill a container, empty a container or move water from a container to another container. When you move water, you must always fill or empty at least one container. After the moves, container A must have x units of water. Find a sequence of moves where the total amount of moved water is minimum or state that it is impossible to measure the water.
Input
The only line has three integers a, b and x.
Output
First print two integers n and m: the number of moves and the total amount of water moved. After that print a sequence of n moves. Each move must move at least one unit of water and be one of the following:
FILL A: fill container A
FILL B: fill container B
EMPTY A: empty container A
EMPTY B: empty container B
MOVE A B: move water from container A to container B
MOVE B A: move water from container B to container A
If it is not possible to measure the water, only print -1.
Constraints
Example
Input
5 3 4
Output
6 19
FILL A
MOVE A B
EMPTY B
MOVE A B
FILL A
MOVE A B