#include <iostream>
using namespace std;

int main(){
   int h,w,n,x = 0,y = 0;
   cin >> h >> w >> n;
   char c[n];
   int k[n];
   for(int i = 0;i < n;i++) cin >> c[i] >> k[i];
   for(int i = n;i--;){
      if(c[i] == 'R' && k[i] == y) x = (x + w - 1) % w;
      else if(c[i] == 'C' && k[i] == x) y = (y + h - 1) % h;
   }
   cout << (x + y & 1 ? "black" : "white") << endl;
}