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#include <bits/stdc++.h>
using namespace std;
 
#ifdef DEBUG
auto &operator<<(auto &o, pair<auto, auto> p) {
    return o << "()" << p.first << ", " << p.second <<")";
}
auto operator<<(auto &o, auto x)-> decltype(x.end(), o) {
    o << "{";int i = 0;
    for(auto e : x) o << ", "+!i++<<e;
    return o <<"}";
}
#define debug(x...) cerr << "["#x"]: ",[](auto...$){((cerr<<$<<"; "),...)<<endl;}(x)
#else
#define debug(...) {}
#endif
 
#define all(x) x.begin(), x.end()
#define pb push_back
#define fi first
#define se second
typedef pair <int, int> pii;

struct op {
	int a, b, c;
	op(){}
	op (int aa, int bb, int cc) {
		a = aa;
		b = bb;
		c = cc;
	}
};

// 1 - komputer
// 2 - nie ma komputera
// 3 - idk
void solve(int p, vector <op> & x, vector <int> & res, vector <int> & cur) {
	if (p == x.size()) {
		for (int i=0; i<res.size(); ++i) {
			if (res[i] == 0) {
				res[i] = cur[i];
			}
			else if (res[i] == 1 && cur[i] == 2) {
				res[i] = 3;
			}
			else if (res[i] == 2 && cur[i] == 1) {
				res[i] = 3;
			}
		}
		return;
	}

	if (x[p].a == 1) {
		int l = x[p].b, r = x[p].c;
		if (l != r) {
			if (cur[l] == 1 && cur[r] == 1) {
				return;
			}
			else if (cur[l] == 1) {
				cur[r] = 1;
				solve(p+1, x, res, cur);
				cur[r] = 2;
			}
			else if (cur[r] == 1) {
				cur[l] = 1;
				solve(p+1, x, res, cur);
				cur[l] = 2;
			}
			else {
				cur[r] = 1;
				solve(p+1, x, res, cur);
				cur[r] = 2;
				cur[l] = 1;
				solve(p+1, x, res, cur);
				cur[l] = 2;
			}
		}
		else {
			if (cur[l] == 1) {
				return ;
			}
			else {
				cur[l] = 1;
				solve(p+1, x, res, cur);
				cur[l] = 2;
			}
		}
	}
	else if (x[p].a == 2) {
		if (cur[x[p].b] == 1) {
			cur[x[p].b] = 2;
			solve(p+1, x, res, cur);
			cur[x[p].b] = 1; 
		}
		else {
			return;
		}
	}
	else if (x[p].a == 3) {
		solve(p+1, x, res, cur);
	}
}


void test() {
    int n, q; cin>>n>>q;
	vector <op> xd;
    for (int i=0; i<q; ++i) {
		char x; cin>>x;
		if (x == '+') {
			int a, b; cin>>a>>b;
			xd.pb(op(1, a, b));
		}
		else if (x == '-') {
			int a; cin>>a;
			xd.pb(op(2, a, 0));
		}
		else {
			int a; cin>>a;
			vector <int> res(n+1, 0);
			vector <int> cur(n+1, 2);
			solve(0, xd, res, cur);
			debug(res);
			if (res[a] == 1) {
				cout<<"1";
			}
			else if (res[a] == 2) {
				cout<<"0";
			}
			else {
				cout<<"?";
			}
		}
	}
}
 
signed main() {
  ios_base::sync_with_stdio(0); cin.tie(0);
  int t = 1;
//    cin>>t;
  while (t--) {
    test();
  }
}