public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( new BufferedReader ( new InputStreamReader ( System . in ) ) ) ;
  int n = sc . nextInt ( ) ;
  int m = sc . nextInt ( ) ;
  for ( int i = 0 ;
  i < n * m ;
  i ++ ) {
    String s = sc . next ( ) ;
    if ( s . equalsIgnoreCase ( "C" ) || s . equalsIgnoreCase ( "M" ) || s . equalsIgnoreCase ( "Y" ) ) {
      System . out . println ( "#Color" ) ;
      return ;
    }
  }
  System . out . println ( "#Black&White" ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( new BufferedReader ( new InputStreamReader ( System . in ) ) ) ; int n = sc . nextInt ( ) ; int m = sc . nextInt ( ) ; for ( int i = 0 ; i < n * m ; i ++ ) { String s = sc . next ( ) ; if ( s . equalsIgnoreCase ( " C " ) || s . equalsIgnoreCase ( " M " ) || s . equalsIgnoreCase ( " Y " ) ) { System . out . println ( " # Color " ) ; return ; } } System . out . println ( " # Black & White " ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (object_creation_expression type: (type_identifier) arguments: (argument_list (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier))) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal)))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal))))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) (return_statement))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))))