public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int a = sc . nextInt ( ) * sc . nextInt ( ) ;
  while ( a -- > 0 ) {
    String x = sc . next ( ) ;
    if ( ! ( x . equals ( "B" ) | x . equals ( "G" ) | x . equals ( "W" ) ) ) {
      System . out . println ( "#Color" ) ;
      return ;
    }
  }
  System . out . println ( "#Black&White" ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int a = sc . nextInt ( ) * sc . nextInt ( ) ; while ( a -- > 0 ) { String x = sc . next ( ) ; if ( ! ( x . equals ( " B " ) | x . equals ( " G " ) | x . equals ( " W " ) ) ) { 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 (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))) (while_statement condition: (parenthesized_expression (binary_expression left: (update_expression (identifier)) right: (decimal_integer_literal))) 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 (unary_expression operand: (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))))))