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#include <bits/stdc++.h>

using namespace std;

#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;

#ifdef LOCAL
ostream &operator<<(ostream &out, string str)
{
    for (char c : str)
        out << c;
    return out;
}
template <class L, class R>
ostream &operator<<(ostream &out, pair<L, R> p) { return out << "(" << p.first << ", " << p.second << ")"; }
template <class L, class R, class S>
ostream &operator<<(ostream &out, tuple<L, R, S> p)
{
    auto &[a, b, c] = p;
    return out << "(" << a << ", " << b << ", " << c << ")";
}
template <class T>
auto operator<<(ostream &out, T a) -> decltype(a.begin(), out)
{
    out << '{';
    for (auto it = a.begin(); it != a.end(); it = next(it))
        out << (it != a.begin() ? ", " : "") << *it;
    return out << '}';
}
void dump() { cerr << "\n"; }
template <class T, class... Ts>
void dump(T a, Ts... x)
{
    cerr << a << ", ";
    dump(x...);
}
#define debug(...) cerr << "[" #__VA_ARGS__ "]: ", dump(__VA_ARGS__)
#else
#define debug(...) 42
#endif

vi P, A;
vector<vi> G;
vector<pii> D;

void init(int n)
{
    P = vi(n, -1);
    A = vi(n, 0);
    G = vector<vi>(n);
    D = vector<pii>(n, {0, 0});
}

int fin(int v)
{
    if (P[v] < 0)
        return v;
    P[v] = fin(P[v]);
    return P[v];
}

bool uni(int v, int u)
{
    if (fin(v) == fin(u))
        return false;
    P[fin(v)] = fin(u);
    return true;
}

void dfs(int v, int p)
{
    A[v] = 1;
    for (auto &u : G[v])
        if (u != p && D[u].first)
            dfs(u, v);
    D[v] = {0, 0};
}

void upd(int v)
{
    for (auto &a : G[v])
        if (D[a].first)
        {
            D[a].first--;
            if (D[a].first == 1 && D[a].second)
                upd(a);
        }
    D[v].first = 0;
}

main()
{
    cin.tie(0)->sync_with_stdio(0);
    cin.exceptions(cin.failbit);

    int Z = 1;
    // cin >> Z;
    while (Z--)
    {
        int n, q;
        cin >> n >> q;
        vi M(n, 0);
        init(n);
        for (int i = 0; i < n; i++)
            M[i] = i;
        while (q--)
        {
            char t;
            int a, b;
            cin >> t;
            if (t == '+')
            {
                cin >> a >> b;
                a = M[a - 1];
                b = M[b - 1];
                if (A[a])
                {
                    A[b] = 1;
                    dfs(b, -1);
                    continue;
                }
                if (A[b])
                {
                    A[a] = 1;
                    dfs(a, -1);
                }
                if (!uni(a, b))
                    dfs(a, -1);
                else
                {
                    G[a].push_back(b);
                    G[b].push_back(a);
                    D[a].first++;
                    D[b].first++;
                }
            }
            else if (t == '-')
            {
                cin >> a;
                int temp = a - 1;
                a = M[a - 1];
                if (A[a] == 0)
                {
                    D[a].second = 1;
                    if (D[a].first == 1)
                        upd(a);
                }
                M[temp] = P.size();
                P.push_back(-1);
                G.resize(G.size() + 1);
                A.push_back(0);
                D.push_back({0, 0});
            }
            else
            {
                cin >> a;
                a = M[a - 1];
                if (A[a] == 1)
                    cout << 1;
                else if (D[a].first)
                    cout << '?';
                else
                    cout << 0;
            }
        }
        cout << endl;
    }
}