#include <cstdio>
#include <cstring>

#include <vector>
#include <string>
#include <stack>
#include <queue>
#include <algorithm>

int H, W;
int N;
char S[1048576];
int K[1048576];

int main() {

  // step 1
  scanf("%d %d", &H, &W);
  scanf("%d", &N);
  for(int i = 0; i < N; ++i) {
    char t[2];
    scanf("%s %d", t, &K[i]);
    S[i] = t[0];
  }

  // step 2
  int r = 0, c = 0;
  for(int i = N - 1; i >= 0; --i) {
    if( S[i] == 'R' and r == K[i] ) {
      c = (c + (W - 1)) % W;
    }
    if( S[i] == 'C' and c == K[i] ) {
      r = (r + (H - 1)) % H;
    }
  }

  // step 3
  printf("%s\n", ((c + r) % 2 == 0 ? "white" : "black"));

  return 0;
}