In a modernized warehouse, robots are used to fetch the goods. Careful
planning is needed to ensure that the robots reach their destinations
without crashing into each other. Of course, all warehouses are
rectangular, and all robots occupy a circular floor space with a
diameter of 1 meter. Assume there are N robots, numbered from 1 through
N. You will get to know the position and orientation of each robot, and
all the instructions, which are carefully (and mindlessly) followed by
the robots. Instructions are processed in the order they come. No two
robots move simultaneously; a robot always completes its move before the
next one starts moving.
A robot crashes with a wall if it attempts to move outside the area of
the warehouse, and two robots crash with each other if they ever try to
occupy the same spot.
The first line of input is K, the number of test cases. Each test case starts with one line consisting of two integers, 1 <= A, B <= 100, giving the size of the warehouse in meters. A is the length in the EW-direction, and B in the NS-direction. The second line contains two integers, 1 <= N, M <= 100, denoting the numbers of robots and instructions respectively. Then follow N lines with two integers, 1 <= Xi <= A, 1 <= Yi <= B and one letter (N, S, E or W), giving the starting position and direction of each robot, in order from 1 through N. No two robots start at the same position.
Figure 1: The starting positions of the robots in the sample warehouse
Finally there are M lines, giving the instructions in sequential order. An instruction has the following format: < robot #> < action> < repeat> Where is one of
L: turn left 90 degrees,
R: turn right 90 degrees, or
F: move forward one meter,
and 1 <= < repeat> <= 100 is the number of times the robot should perform this single move.
Output one line for each test case:
Robot i crashes into the wall, if robot i crashes into a wall. (A robot crashes into a wall if Xi = 0, Xi = A + 1, Yi = 0 or Yi = B + 1.)
Robot i crashes into robot j, if robots i and j crash, and i is the moving robot.
OK, if no crashing occurs.
Only the first crash is to be reported.
Robot 1 crashes into the wall
Robot 1 crashes into robot 2
OK
Robot 1 crashes into robot 2