public static void main ( String [ ] args ) throws Exception {
  BufferedReader input = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  int n = Integer . parseInt ( input . readLine ( ) ) ;
  StringTokenizer tokenizer = new StringTokenizer ( input . readLine ( ) ) ;
  String [ ] charac = {
    "P" , "W" , "G" , "Y" };
    boolean [ ] state = new boolean [ 4 ] ;
    String h ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      h = tokenizer . nextToken ( ) ;
      for ( int j = 0 ;
      j < 4 ;
      j ++ ) {
        if ( h . equals ( charac [ j ] ) ) {
          state [ j ] = true ;
          break ;
        }
      }
    }
    System . out . println ( state [ 3 ] ? "Four" : "Three" ) ;
  }
  
public static void main ( String [ ] args ) throws Exception { BufferedReader input = new BufferedReader ( new InputStreamReader ( System . in ) ) ; int n = Integer . parseInt ( input . readLine ( ) ) ; StringTokenizer tokenizer = new StringTokenizer ( input . readLine ( ) ) ; String [ ] charac = { " P " , " W " , " G " , " Y " } ; boolean [ ] state = new boolean [ 4 ] ; String h ; for ( int i = 0 ; i < n ; i ++ ) { h = tokenizer . nextToken ( ) ; for ( int j = 0 ; j < 4 ; j ++ ) { if ( h . equals ( charac [ j ] ) ) { state [ j ] = true ; break ; } } } System . out . println ( state [ 3 ] ? " Four " : " Three " ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) (throws (type_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 (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 (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (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_initializer (string_literal) (string_literal) (string_literal) (string_literal)))) (local_variable_declaration type: (array_type element: (boolean_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (boolean_type) dimensions: (dimensions_expr (decimal_integer_literal))))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (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 (expression_statement (assignment_expression left: (identifier) right: (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: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier))))) consequence: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (true))) (break_statement))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (ternary_expression condition: (array_access array: (identifier) index: (decimal_integer_literal)) consequence: (string_literal) alternative: (string_literal)))))))