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#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#include <stdio.h>
#include <string.h>
#include <array>
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#include <cassert>
using namespace std;
 
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}
template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}

#ifndef ONLINE_JUDGE
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif
#define int long long
#define all(x) x.begin(), x.end()
#define pb push_back
#define ll long long
#define ii pair<int,int>
#define vi vector<int>
#define vll vector<ll>
#define vii vector<ii>
#define vvi vector<vi>
#define fi first
#define se second
#define ld long double
const int MOD = 1000000007;
const int MAXN = 200005;
vi fac(MAXN, 1), fac_inv(MAXN, 1);
int bin_pow(int x, int n) {
    if(n == 0) return 1;
    if(n % 2) return (x * bin_pow(x, n-1)) % MOD;
    int half = bin_pow(x, n/2);
    return (half * half) % MOD;
}
void precalc() {
    for(int i = 1; i < MAXN; i++) {
        fac[i] = (fac[i-1] * i) % MOD;
        fac_inv[i] = bin_pow(fac[i], MOD - 2);
    }
}
int binom(int n, int k) {
    return ((fac[n] * fac_inv[k]) % MOD * fac_inv[n - k]) % MOD;
}
void test_case() {
    int n, m;
    cin >> n >> m;
    vi vec(n + 1);
    for(int i = 1; i <= n; i++) cin >> vec[i];
    vvi adj(n + 1);
    for(int i = 1; i <= m; i++) {
        int u, v;
        cin >> u >> v;
        adj[u].pb(v);
        adj[v].pb(u);
    }
    vi dist(n + 1, -1);
    vi vis(n + 1, 0);
    auto fun = [&](int u) {
        queue<int> q;
        vi cnt(2, 0), sajz(2, 0);
        bool f = false;

        q.push(u);
        vis[u] = 1;
        dist[u] = 0;

        while(q.size() > 0) {
            int cur = q.front();
            q.pop();
            vis[cur] = 1;
            cnt[dist[cur]] += vec[cur];
            sajz[dist[cur]]++;

            for(auto v : adj[cur]) {
                if(dist[v] == -1) {
                    dist[v] = 1 ^ dist[cur];
                    q.push(v);
                }
                if(dist[v] == dist[cur]) {
                    f = 1;
                }
            }
        }

        return vi{f, sajz[0], sajz[1], cnt[0], cnt[1]};
    };
    int ans = 1;
    for(int i = 1; i <= n; i++) {
        if(!vis[i]) {
            auto res = fun(i);
            int f = res[0], s1 = res[1], s2 = res[2], c1 = res[3], c2 = res[4];
            if(f) {
                int st = (c1 + c2) % 2, to_add = 0;
                for(int j = st; j <= s1 + s2; j += 2) {
                    to_add += binom(s1 + s2, j);
                    to_add %= MOD;
                }
                ans *= to_add;
                ans %= MOD;
            } else {
                int mini = min(c1, c2), to_add = 0;
                c1 -= mini, c2 -= mini;
                for( ; c1 <= s1 && c2 <= s2; c1++, c2++) {
                    to_add += (binom(s1, c1) * binom(s2, c2)) % MOD;
                    to_add %= MOD;
                }
                ans *= to_add;
                ans %= MOD;
            }
        }
    }
    cout << ans << "\n";
}
int32_t main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    precalc();
 
    int tc = 1;
    // cin >> tc;
    while(tc--) {
        test_case();
    }
    return 0;
}