#include <bits/stdc++.h>
#define optimizar ios_base::sync_with_stdio(0); cin.tie(0)
#define lld long long int
#define MAXN 52
using namespace std;

lld resp = 1;

int n, m;

int x, y;
int fa[MAXN];

vector < int > lista[MAXN];

int busca(int x) {
     while (x != fa[x])
         x = fa[x];
     return x;
}

int main()
{
    optimizar;

    cin >> n >> m;

    for (int i = 1; i <= n; i++)
        fa[i] = i;

    while (m--) {
        cin >> x >> y;
        int fa_x = busca(x);
        int fa_y = busca(y);
        fa[fa_x] = fa_y;
    }
    lld resp = (1LL << n);
    for (int i = 1; i <= n; i++) {
        if (busca(i) == i)
            resp >>= 1;
    }

    cout << resp << "\n";

    return 0;
}