又短又难,呜呜呜呜
package scanner;
import java.util.*;
public class Main {
static int k=0;
static char[] crr;
public static void main(String[] args) {
Scanner scanner=new Scanner(System.in);
crr=scanner.next().toCharArray();
System.out.println(dfs());
}
private static int dfs() {
int res=0;
while(k<crr.length) {
if(crr[k]=='(') {
k++;
res+=dfs();
k++;
}else if(crr[k]=='|') {
k++;
res=Math.max(res, dfs());
}else if(crr[k]=='x') {
k++;
res++;
}else if (crr[k]==')') {
break;
}
}
return res;
}
}