public static void main ( String [ ] args ) {
  RealScanner sc = new RealScanner ( ) ;
  int m , n ;
  m = sc . nextInt ( ) ;
  n = sc . nextInt ( ) ;
  String [ ] [ ] s = new String [ m ] [ n ] ;
  for ( int i = 0 ;
  i < m ;
  i ++ ) {
    for ( int j = 0 ;
    j < n ;
    j ++ ) {
      s [ i ] [ j ] = sc . next ( ) ;
    }
  }
  int count = 0 ;
  boolean check = true ;
  for ( int i = 0 ;
  i < m ;
  i ++ ) {
    for ( int j = 0 ;
    j < n ;
    j ++ ) {
      if ( s [ i ] [ j ] . equals ( "B" ) || s [ i ] [ j ] . equals ( "W" ) || s [ i ] [ j ] . equals ( "G" ) ) {
      }
      else {
        count ++ ;
        check = false ;
      }
    }
  }
  if ( count < 3 && check ) {
    System . out . println ( "#Black&White" ) ;
  }
  else {
    System . out . println ( "#Color" ) ;
  }
}

public static void main ( String [ ] args ) { RealScanner sc = new RealScanner ( ) ; int m , n ; m = sc . nextInt ( ) ; n = sc . nextInt ( ) ; String [ ] [ ] s = new String [ m ] [ n ] ; for ( int i = 0 ; i < m ; i ++ ) { for ( int j = 0 ; j < n ; j ++ ) { s [ i ] [ j ] = sc . next ( ) ; } } int count = 0 ; boolean check = true ; for ( int i = 0 ; i < m ; i ++ ) { for ( int j = 0 ; j < n ; j ++ ) { if ( s [ i ] [ j ] . equals ( " B " ) || s [ i ] [ j ] . equals ( " W " ) || s [ i ] [ j ] . equals ( " G " ) ) { } else { count ++ ; check = false ; } } } if ( count < 3 && check ) { System . out . println ( " # Black & White " ) ; } else { System . out . println ( " # Color " ) ; } }
(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)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier)) declarator: (variable_declarator name: (identifier))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (array_type element: (type_identifier) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (type_identifier) dimensions: (dimensions_expr (identifier)) dimensions: (dimensions_expr (identifier))))) (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 (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 (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (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 (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 (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (method_invocation object: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) name: (identifier) arguments: (argument_list (string_literal))) right: (method_invocation object: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) right: (method_invocation object: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) consequence: (block) alternative: (block (expression_statement (update_expression (identifier))) (expression_statement (assignment_expression left: (identifier) right: (false))))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (identifier))) 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))))))))