static long cal_minimum_time ( long X ) {
  long t = 0 ;
  long sum = 0 ;
  while ( sum < X ) {
    t ++ ;
    sum = sum + t ;
  }
  return t ;
}

static long cal_minimum_time ( long X ) { long t = 0 ; long sum = 0 ; while ( sum < X ) { t ++ ; sum = sum + t ; } return t ; }
(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))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) body: (block (expression_statement (update_expression (identifier))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier)))))) (return_statement (identifier))))