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#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
 
#define mp make_pair
#define pb push_back
#define ppb pop_back
#define pf push_front
#define ppf pop_front
#define eb emplace_back
#define st first
#define nd second
#define vt vector
#define VAR(__var)  #__var << ": " << __var << " "
#define PAIR(__var) #__var << ": " << __var.first << ", " << __var.second << " "
#define FOR(__var, __start, __end)  for(int __var=__start; __var<__end; ++__var)
#define FORB(__var, __start, __end) for(int __var=__start; __var>__end; --__var)
#define REP(__var, __cnt) for(int __var=0; __var<(__cnt); ++__var)
#define EACH(__var, __x) for(auto __var : __x)
#define maxi(__x, __y) __x = (__x>__y?__x:__y)
#define mini(__x, __y) __x = (__x<__y?__x:__y)
#define all(__var)     (__var).begin(),(__var).end()
#define rall(__var)    (__var).rbegin(),(__var).rend()
#define sz(__var)      (int)(__var).size()

using namespace std;
 
using namespace __gnu_pbds;
template <typename T>
using ord_set = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;

#ifdef DEBUG
template<typename Stream, typename T1, typename T2>
Stream& operator << (Stream& out, pair<T1, T2> a) {return out << "(" << a.st << ", " << a.nd << ")";}
 
template<typename Stream, typename T>
Stream &operator << (Stream& out, T v) {
	out << "{";
	int i = 0;
	for (auto x : v)
		out << x << ((++ i) != sz(v) ? ", " : "");
	return out << "}";
}
 
template<typename... Args>
void dump(Args... x) {((cerr << x << ", "), ...) << '\n';}
 
#define debug(x...) cerr << "[" #x "]: ", dump(x)
#else
#define debug(...) 0
#endif
 
typedef       long long ll;
typedef     long double ld;
typedef   pair<ll, ll> pll;
typedef pair<int, int> pii;

const bool __test_cases = false;
 
const int INF = 1e9+2137;

struct DSU {
	vt<int> rep, sz;
	vt<bool> ok;

	DSU(int n) {
		rep.resize(n);
		iota(all(rep), 0);
		sz.resize(n, 1);
		ok.resize(n, false);
	}

	int fnd(int x) {
		if(rep[x] != x)
			rep[x] = fnd(rep[x]);
		return rep[x];
	}

	void onion(int a, int b) {
		int fa = fnd(a);
		int fb = fnd(b);

		if(fa == fb) {
			ok[fa] = true;
			return;
		}

		if(sz[fa] > sz[fb])
			swap(fa, fb), swap(a, b);
		
		sz[fb] += sz[fa];
		rep[fa] = fb;
		if(ok[fa])
			ok[fb] = true;
	}

	void rem(int x) {
		int fx = fnd(x);
		--sz[fx];
	}

	char ans(int x) {
		int fx = fnd(x);
		if(ok[fx])
			return '1';
		if(sz[fx] == 1)
			return '0';
		return '?';
	}
};

void solve() {
	int n, q;
	cin >> n >> q;

	DSU dsu(n+q+10);
	int nxt = n;
	
	vt<int> id(n+1);
	iota(all(id), 0);
	string res = "";
	FOR(i, 0, q) {
		char type;
		cin >> type;

		if(type == '+') {	
			int x, y;
			cin >> x >> y;
			x = id[x];
			y = id[y];
			dsu.onion(x, y);
		}
		else if(type == '-') {
			int x;
			cin >> x;
			dsu.rem(id[x]);
			id[x] = ++nxt;
		}
		else {
			int x;
			cin >> x;
			x = id[x];
			res.pb(dsu.ans(x));
		}
	}

	cout << res << '\n';
}

int32_t main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	
	int t=1;
	if(__test_cases)
		cin >> t;
	while(t--) {
		solve();
	}

	return 0;
}