//京东第一题 package com.exam.jingdong; import java.util.Scanner; public class Title01 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); String str = sc.next(); System.out.println(getResult(str)); sc.close(); } private static int getResult(String str) { if("".equals(str)){ return 1; } int length = str.length(); char[] charArray = str.toCharArray(); int count = 0; int result = 1; for(int i=0;i<length;i++){ if(charArray[i]=='('){ count++; }else{ result*=count; count--; } } return result; } }