#include<iostream>
using namespace std;

int H, W;
bool map[10000][10000];

void init(){
    for(int i = 0; i < H; i++){
        for(int j = 0; j < W; j++){
            map[i][j] = (i+j)%2 == 0;
        }
    }
}

void row(int r){
    bool tmp = map[r][W-1];
    for(int i = W-1; i >= 1; i--)   map[r][i] = map[r][i-1];
    map[r][0] = tmp;
}

void column(int c){
    bool tmp = map[H-1][c];
    for(int i = H-1; i >= 1; i--)   map[i][c] = map[i-1][c];
    map[0][c] = tmp;
}

int main(){
    cin >> H >> W;
    init();

    int n;
    cin >> n;
    
    char s;
    int k;
    
    while(n-- > 0){
        cin >> s >> k;
        if(s == 'R')        row(k);
        else if(s == 'C')   column(k);
    }

    if(map[0][0])   cout << "white" << endl;
    else            cout << "black" << endl;

    return 0;
}