#include <bits/stdc++.h>   using namespace std;   int main() {     int n, m;     cin >> n >> m;     char c;     bool ch = false;     for (int i = 0; i < n; i++) {       for (int j = 0; j < m; j++) {         cin >> c;         if (c ==  C  || c ==  M  || c ==  Y ) {           ch = true;           break;         }       }     }     if (ch) {       cout <<  #Color  << endl;     } else {       cout <<  #Black&White  << endl;     }     return 0;   }   