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#include<bits/stdc++.h>
 
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("trapv")
 
#define st first
#define nd second
#define pb push_back
#define pp pop_back
#define eb emplace_back
#define mp(a, b) make_pair(a, b)
#define all(x) (x).begin(), (x).end()
#define rev(x) reverse(all(x))
#define sor(x) sort(all(x))
#define sz(x) (int)(x).size()
#define rsz(x) resize(x)
 
using namespace std;
 
///~~~~~~~~~~~~~~~~~~~~~~~~~~
 
template <typename H, typename T> 
ostream& operator<<(ostream& os, pair<H, T> m){
	return os <<"("<< m.st<<", "<<m.nd<<")";
}
template <typename H> 
ostream& operator<<(ostream& os, vector<H> V){
	os<<"{";
	for(int i=0; i<V.size(); i++){
		if(i)os<<" ";
		os<<V[i];
	}
	os<<"}";
	return os;
}
 
void debug(){cerr<<"\n";}
template <typename H, typename... T>
void debug(H h, T... t) {cerr<<h; if (sizeof...(t)) cerr << ", "; debug(t...);}
#define deb(x...) cerr<<#x<<" = ";debug(x);
 
///~~~~~~~~~~~~~~~~~~~~~~~~~
 
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<pii > vii;
typedef vector<ll> vl;
typedef vector<pll> vll;
typedef string str;
 
#define BOOST ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
 
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
 
const int N=1e6+5, INF=1e9+5, mod=1e9+7;

set<int> S[N];//jezeli cos w S to znaczy ze wszystkie oprocz jednego
int r[N], comp[N], czy[N];
int find(int v){
	if(v==r[v])return v;
	return r[v]=find(r[v]);
}
void zabierz(int v){
	if(czy[v]==1){
		czy[v]=0;
		return;
	}
	int s=find(comp[v]);
	S[s].erase(v);
	if(S[s].size()==1){
		int t=*S[s].begin();
		comp[t]=0;
		S[s].clear();
	}
	comp[v]=0;
}

int main(){
	BOOST;
	int n, q;
	cin>>n>>q;
	int wsk=1;
	while(q--){
		char c;
		cin>>c;
		if(c=='+'){
			int a, b;
			cin>>a>>b;
			if(czy[b])swap(a, b);
			if(czy[a]){
				a=b;
			}
			if(a==b && !comp[a]){
				czy[a]=1;
				continue;
			}
			if(comp[a]==0 && comp[b]==0){
				comp[a]=comp[b]=wsk;
				r[wsk]=wsk;
				S[wsk].insert(a);
				S[wsk].insert(b);
				wsk++;
				continue;
			}
			if(comp[a]==0)swap(a, b);
			if(comp[b]==0){
				S[find(comp[a])].insert(b);
				comp[b]=find(comp[a]);
			}
			else if(find(comp[a])==find(comp[b])){
				int t=find(comp[a]);
				for(int i:S[t]){
					czy[i]=1;
					comp[i]=0;
				}
				S[t].clear();
			}
			else{
				int t=find(comp[a]), s=find(comp[b]);
				if(S[s].size()<S[t].size()){
					swap(s, t);
				}
				r[t]=s;
				for(int i:S[t])S[s].insert(i);
				S[t].clear();
			}
		}
		else if(c=='-'){
			int v;
			cin>>v;
			zabierz(v);
		}
		else{
			int v;
			cin>>v;
			if(czy[v])cout<<1;
			else if(comp[v]==0)cout<<0;
			else cout<<"?";
		}
	}
	/*for(int i=1; i<=n; i++){
		deb(i, czy[i], comp[i]);
	}*/
}