求教

#include<bits/stdc++.h>
using namespace std;
string s;
stack<pair<char, int>>p;
stack<int>q;
int fuhao[256], cnt_and, cnt_or;
void duanlu(int &i){
    if(s[i] == '|' && s[i - 1] == '0' || s[i] == '&' && s[i - 1] == '1')return 0;
}
void cal(stack<int> &q, stack<pair<char, int>> &p){
    int x = p.top().second;
    char t = p.top().first; p.pop();
    int b = q.top(); q.pop();
    int a = q.top(); q.pop();
    switch(t){
        case '&':
            if(a == 0)q.push(0);
            else if(b == 0)q.push(0);
            else q.push(1);
            break;
        case '|':
            if(a == 1)q.push(1);
            else if(b == 1)q.push(1);
            else q.push(0);
    }
}
int main(){
    fuhao['&'] = 2;
    fuhao['|'] = 1;
    cin >> s;
    s.push_back(')');
    p.push(make_pair('(', -1));
    for(int i = 0; i < s.size() - 1; i++){
        char &c = s[i];
        if(isdigit(c)){
            q.push((int)c - 48);
        }
        if(c == '&' || c == '|'){
            while(p.top().first != '(' && fuhao[p.top().first] >= fuhao[c])
                cal(q, p);
            duanlu(i);
            p.push(make_pair(c, i));
        }
        if(c == '(') p.push(make_pair(c, i));
        else if(c == ')') {
            while(p.top().first != '(')
                cal(q, p);
            p.pop();
        }
    }
    cout << q.top() << '\n' << cnt_and << ' ' << cnt_or << '\n';
    return 0;
}