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#include <algorithm>
#include <iostream>
#include <list>
#include <map>
#include <queue>
#include <set>
#include <string>
#include <vector>

using namespace std;

#define PB push_back
#define MP make_pair
#define F first
#define S second
#define ALL(x) (x).begin(),(x).end()
#define SIZE(x) (int)(x).size()
#define CLEAR(tab) memset(tab, 0, sizeof(tab))
#define REP(x, n) for(int x = 0; x < (n); x++)
#define FOR(x, b, e) for(int x = (b); x <= (e); x++)
#define FORD(x, b, e) for(int x = (b); x >= (e); x--)
#define VAR(v, n) __typeof(n) v = (n)
#define FOREACH(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i)
#define DEBUG(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)

typedef long long int LL;
typedef pair<int,int> PII;
typedef vector<int> VI;

const int MXN = 2000000;
const int C = 262144;
const int INF = 1000000001;
const int MOD = 1000000007;

int p[MXN];
int ran[MXN];

int find(int x) {
    if(p[x] != x)
        p[x] = find(p[x]);
    return p[x];
}

void link(int x, int y) {
    x = find(x);
    y = find(y);
    if(x == y)
        return;
    if(ran[x] < ran[y]) {
        p[x] = y;
    }
    else if(ran[x] > ran[y]) {
        p[y] = x;
    }
    else {
        ran[x]++;
        p[y] = x;
    }
}

int res[MXN];
int ind[MXN];
int skla[MXN];
int cnt = 0;

void test() {
    int n, q;
    scanf("%d %d\n", &n, &q);
    FOR(i, 1, MXN - 1) {
        p[i] = i;
        ind[i] = i;
        skla[i] = 1;
    }
    cnt = n;
    FOR(i, 1, q) {
        int x, y;
        char c;
        while(1) {
            c = getchar();
            if(c == '?' || c == '+' || c == '-')
                break;
        }
        if(c == '+') {
            scanf("%d %d", &x, &y);
            x = ind[x];
            y = ind[y];
            int px = find(x);
            int py = find(y);   
            if(px == py) {
                res[px] = 1;
            }
            else {
                int wyn = 2;
                if(res[px] == 1 || res[py] == 1)
                    wyn = 1;
                int sk = skla[px] + skla[py];
                link(px, py);
                px = find(px);
                res[px] = wyn;
                skla[px] = sk;
            }
        }
        else if(c == '-') {
            scanf("%d", &x);
            skla[find(ind[x])]--;
            ind[x] = ++cnt;
        }
        else {
            scanf("%d", &x);
            x = ind[x];
            int w = res[find(x)];
            if(w < 2)
                printf("%d", w);
            else {
                if(skla[find(x)] == 1)
                    printf("0");
                else 
                    printf("?");
            }
        }
    }
    printf("\n");
}

int main() {
	int te = 1;
//	scanf("%d", &te);
	while(te--)
		test();
	return 0;
}