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#include <vector>
#include <iostream>
#include <sstream>
#include <math.h>
#include <sys/time.h>
#include <cstdlib>
#include <algorithm>
#include <cassert>
#include <cstring>
#include <fstream>
#include <set>
#include <map>
#include <iomanip>
#include <queue>

#define FOR(i,a,b)  for(__typeof(b) i=(a);i<(b);++i)
#define REP(i,a)    FOR(i,0,a)
#define FOREACH(x,c)   for(__typeof(c.begin()) x=c.begin();x != c.end(); x++)
#define ALL(c)      c.begin(),c.end()
#define CLEAR(c)    memset(c,0,sizeof(c))
#define SIZE(c) (int) ((c).size())

#define PB          push_back
#define MP          make_pair
#define X           first
#define Y           second

#define ULL         unsigned long long
#define LL          long long
#define LD          long double
#define II         pair<int, int>
#define DD         pair<double, double>
#define FF          pair<float,float>

#define VC	    vector
#define VI          VC<int>
#define VVI         VC<VI>
#define VVVI        VC<VVI>
#define VD          VC<double>
#define VS          VC<string>
#define VII         VC<II>
#define VDD         VC<DD>
#define VFF         VC<FF>
#define VVD         VC<VD>
#define VVVD        VC<VVD>
#define VULL         VC<ULL>

#define DB(a)       cerr << #a << ": " << a << endl;

using namespace std;

template<class T> void print(VC < T > v) {cerr << "[";if (SIZE(v) != 0) cerr << v[0]; FOR(i, 1, SIZE(v)) cerr << "," << v[i]; cerr << "]\n";}
template<class T> string i2s(T &x) { ostringstream o; o << x; return o.str(); }
VS split(string &s, char c = ' ') {VS all; int p = 0, np; while (np = s.find(c, p), np >= 0) {all.PB(s.substr(p, np - p)); p = np + 1;} if (p < SIZE(s)) all.PB(s.substr(p)); return all;}

#define NO -2
#define YES -1


int main(int argc, char *argv[]){
    std::ios::sync_with_stdio(0);
    int N,Q;
    cin >> N >> Q;

    vector<set<int> > sets(N/2);
    int sInd = 0;
    
    VI state(N,NO);
    
    string output;
    output.reserve(N);

    REP(i,Q){
        char c;
        int x,y;
        cin >> c;
        if (c == '+'){
            cin >> x >> y; x--; y--;
            if (x == y){
                if (state[x] >= 0){
                    set<int> &S = sets[state[x]];
                    for(auto it : S)
                        state[it] = YES;
                    S.clear();
                } else
                    state[x] = YES;
            } else if ( (state[x] == YES) || (state[y] == YES) ){
                if (state[y] == YES) swap(x,y);
                if (state[y] == NO)
                    state[y] = YES;
                else{
                    set<int> &T = sets[state[y]];
                    for(auto it : T)
                        state[it] = YES;
                    T.clear();
                }
            } else if ( (state[x] >= 0) && (state[y] >= 0) ){
                if (state[x] == state[y]){
                    set<int> &S = sets[state[x]];
                    for(auto it : S)
                        state[it] = YES;
                    S.clear();
                } else{
                    if (SIZE(sets[state[x]]) < SIZE(sets[state[y]]))
                        swap(x,y);
                    set<int> &S = sets[state[x]];
                    set<int> &T = sets[state[y]];
                    for(auto it : T){
                        S.insert(it);
                        state[it] = state[x];
                    }
                    T.clear();
                }
            } else{
                if (state[y] >= 0) swap(x,y);
                if (state[x] == NO){
                    while (SIZE(sets[sInd]) != 0) sInd = (sInd+1)%N;
                    state[x] = sInd;
                    sets[sInd].insert(x);
                }
                state[y] = state[x];
                sets[state[x]].insert(y);
            }

        } else if (c == '-'){
            cin >> x; x--;
            if (state[x] >= 0){
                set<int> &S = sets[state[x]];
                S.erase(x);
                if (SIZE(S) == 1){
                    state[*(S.begin())] = NO;
                    S.clear();
                }
            }
            state[x] = NO;
        } else{
            cin >> x; x--;
            switch(state[x]){
                case NO:
                    output.PB('0');
                    break;
                case YES:
                    output.PB('1');
                    break;
                default:
                    output.PB('?');
            }
        }
    }
    cout << output << endl;
    return 0;
}