public static void main ( String [ ] args ) {
  FastScanner fs = new FastScanner ( ) ;
  char [ ] s = fs . next ( ) . toCharArray ( ) ;
  HashSet < Character > dist = new HashSet < > ( ) ;
  for ( char c : s ) {
    dist . add ( c ) ;
  }
  if ( dist . size ( ) % 2 == 0 ) {
    System . out . println ( "CHAT WITH HER!" ) ;
  }
  else {
    System . out . println ( "IGNORE HIM!" ) ;
  }
}

public static void main ( String [ ] args ) { FastScanner fs = new FastScanner ( ) ; char [ ] s = fs . next ( ) . toCharArray ( ) ; HashSet < Character > dist = new HashSet < > ( ) ; for ( char c : s ) { dist . add ( c ) ; } if ( dist . size ( ) % 2 == 0 ) { System . out . println ( " CHAT ▁ WITH ▁ HER ! " ) ; } else { System . out . println ( " IGNORE ▁ HIM ! " ) ; } }
(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: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (generic_type (type_identifier) (type_arguments)) arguments: (argument_list)))) (enhanced_for_statement type: (integral_type) name: (identifier) value: (identifier) body: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (decimal_integer_literal)) right: (decimal_integer_literal))) 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))))))))