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#include <iostream>
#include <cstring>

int main()
{
    int n = 0, q = 0;
    std::cin >> n >> q;

    int count = 0, countUnknown = 0;
    char tab[n];
    memset(tab, '0', n);
    while (q-- > 0)
    {
        char znak;
        std::cin >> znak;

        switch (znak)
        {
            case '+':
            {
                int a = 0, b = 0;
                std::cin >> a >> b;
                ++count;
                if (a == b)
                {
                    if (tab[a] == '0')
                        ++countUnknown;
                    tab[a] = '1';
                }
                else if (tab[a] == '1')
                {
                    if (tab[b] == '0')
                        ++countUnknown;
                    tab[b] = '1';
                }
                else if (tab[b] == '1')
                {
                    if (tab[a] == '0')
                        ++countUnknown;
                    tab[a] = '1';
                }
                else
                {
                    if (tab[a] == '0')
                    {
                        ++countUnknown;
                        tab[a] = '?';
                    }
                    if (tab[b] == '0')
                    {
                        ++countUnknown;
                        tab[b] = '?';
                    }
                }
                break;
            }
            case '-':
            {
                int a = 0;
                std::cin >> a;
                --count;
                --countUnknown;
                tab[a] = '0';
                break;
            }
            case '?':
            {
                int a = 0;
                std::cin >> a;
                std::cout << tab[a];
                break;
            }
        }
        if (count == countUnknown)
        {
            for (int i = 0; i < n; ++i)
            {
                if (tab[i] == '?')
                    tab[i] = '1';
            }
        }
    }
}