UVa 10443 - Rock, Scissors, Paper

Summary
We have a R x C matrix of 'R's 'S's and 'P's ( rock, scissors and paper, respectively ). Like the known game of same name, 'R' beat 'S' that beat 'P' that beat 'R'.

Every day, each R|S|P try to get your vertical/horizontal adjacent position.

your mission is to show the state of the matrix before the Nth day.

Explanation
The positions will only be changed at the end of day. Cause it, you may keep 2 matrix, one for today, and one for tomorrow.

Gotchas
One 'R' only can be changed for 'P'. and, iff 'R' have a 'P' as neighbor. One 'S' only can be changed for 'R'. and, iff 'S' have a 'R' as neighbor. One 'P' only can be changed for 'S'. and, iff 'P' have a 'S' as neighbor.

Example

 * RSPR|                 |RRSP|                  |RRRS|                  |RRRR|
 * SPRS| == 1st day ==>  |RSPR|  == 2nd day ==>  |RRSP|  == 3rd day ==>  |RRRS|  . ..
 * PRSP|                 |SPRS|                  |RSPR|                  |RRSP|

Input
3 3 3 1 RRR RSR RRR 3 4 2 RSPR SPRS PRSP 10 10 10 SSSSSRRRRR PPPPPPPPPP PSPSPSPSPS PRPRPRPRPR RPRPRPRPRP PPPPPRRRRR SSSSSRRRRR RRSPRRSPRR PPPSSSSSSS SSSSSSSSSS

Output
RRR RRR RRR

RRRS RRSP RSPR

SSRPPSPSPS SRSRPRSRSR RPRPRPRPRP SSSSSSSPSP SSSSRSSPPP SRSRPRSSPR RPRPSSSSSP PSPRSSPRSS SSRPSPRPSP PSSRPRSRPR