public static void main ( String [ ] args ) {
  Scanner scan = new Scanner ( System . in ) ;
  int n = scan . nextInt ( ) ;
  int m = scan . nextInt ( ) ;
  boolean a = true ;
  for ( int i = 0 ;
  i <= n ;
  i ++ ) {
    String s = scan . nextLine ( ) ;
    for ( int j = 0 ;
    j < s . length ( ) ;
    j ++ ) {
      if ( s . charAt ( j ) == ' ' ) {
        continue ;
      }
      if ( s . charAt ( j ) == 'Y' || s . charAt ( j ) == 'M' || s . charAt ( j ) == 'C' ) {
        a = false ;
      }
    }
  }
  if ( a == false ) {
    System . out . println ( "#Color" ) ;
  }
  else {
    System . out . println ( "#Black&White" ) ;
  }
  scan . close ( ) ;
}

public static void main ( String [ ] args ) { Scanner scan = new Scanner ( System . in ) ; int n = scan . nextInt ( ) ; int m = scan . nextInt ( ) ; boolean a = true ; for ( int i = 0 ; i <= n ; i ++ ) { String s = scan . nextLine ( ) ; for ( int j = 0 ; j < s . length ( ) ; j ++ ) { if ( s . charAt ( j ) == ' ▁ ' ) { continue ; } if ( s . charAt ( j ) == ' Y ' || s . charAt ( j ) == ' M ' || s . charAt ( j ) == ' C ' ) { a = false ; } } } if ( a == false ) { System . out . println ( " # Color " ) ; } else { System . out . println ( " # Black & White " ) ; } scan . close ( ) ; }
(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: (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)))) (local_variable_declaration type: (boolean_type) declarator: (variable_declarator name: (identifier) value: (true))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (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)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal))) consequence: (block (continue_statement))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal)) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal))) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal)))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (false))))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (false))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))