private static long fact ( long num ) {
  long ans = 1 ;
  for ( long i = 2 ;
  i <= num ;
  i ++ ) {
    ans = mod ( ans * i ) ;
  }
  return ans ;
}

private static long fact ( long num ) { long ans = 1 ; for ( long i = 2 ; i <= num ; i ++ ) { ans = mod ( ans * i ) ; } return ans ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (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 name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (identifier)))))))) (return_statement (identifier))))