#include <bits/stdc++.h>
using namespace std;

#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define FORR(x,arr) for(auto&& x:arr)
#define FOR(i,a,b) for (int i = (a); i < (b); i++)
#define RFOR(i,a,b) for (int i = (b)-1; i >= (a); i--)
#define REP(i,n) for (int i = 0; i < (n); i++)
#define RREP(i,n) for (int i = (n)-1; i >= 0; i--)
#define ALL(x) (x).begin(), (x).end()
#define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++)
#define RITR(x,c) for(__typeof(c.rbegin()) x=c.rbegin();x!=c.rend();x++)
#define BIT(n) (1LL<<(n))
#define SZ(x) ((int)(x).size())
typedef long long ll;
// -------------------------------------

int H, W, N;
typedef pair<char, int> CI;
CI M[1000010];

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  cin >> H >> W >> N;

  int y = 0, x = 0;

  char c;
  int k;
  REP(i, N) {
    cin >> c >> k;
    M[i].first = c;
    M[i].second = k;
  }

  RREP(i, N) {
    c = M[i].first;
    k = M[i].second;
    if (c == 'R' && k == y) {
      x--;
      if (x == -1) x = W-1;
    }
    else if (c == 'C' && k == x) {
      y--;
      if (y == -1) y = H-1;
    }
  }

  if ((x + y) % 2) puts("black");
  else puts("white");

  return 0;
}