符号配对

#include <iostream>
#include <stack>
using namespace std;
int main ()
{
    stack<char> stk;
    string str;
    while (getline (cin , str))
    {
        if (str == ".")
        {
            break;
        }

        for (int i = 0;i < str.length ();i ++)
        {
            if (str[i] == '(' || str[i] == '[' || str[i] == '{')
            {
                stk.push (str[i]);
            }

            else if (str[i] == '/' && str[i + 1] == '*')
            {
                stk.push ('<');
                i ++;
            }



            else if (str[i] == ')' || str[i] == ']' || str[i] == '}')
            {

                if (stk.empty ())
                {
                    cout << "NO" <<endl;
                    cout << "?-" << str[i];
                    return 0;
                }

                char c = stk.top ();
                stk.pop ();

                if (str[i] == ')' && c != '(' || str[i] == ']' && c != '[' || str[i] == '}' && c != '{')
                {

                    cout << "NO" <<endl;
                    if (c == '<')
                        cout << "/*-?";
                    else
                    cout << c << "-?";
                    return 0;

                }
            }


            else if (str[i] == '*' && str[i + 1] == '/')
            {
                if (stk.empty ())
                {
                    cout << "NO" <<endl;
                    cout << "?-*/";
                    return 0;
                }

                char c = stk.top ();
                stk.pop ();

                i ++;
                if (c != '<')
                {
                    cout << "NO" <<endl;

                    cout << c << "-?";
                    return 0;
                }
            }

        }


    }

    if (stk.empty ())
        cout << "YES" <<endl;
    else
    {    
        char c = stk.top ();
        stk.pop ();
        if (c != '<')
        {
            cout << "NO" <<endl;
            cout << c << "-?";
            return 0;
        }

        else
        {
            cout << "NO" <<endl;
            cout << "/*-?";
            return 0;
        }

    }

    return 0;
}