/// 407!3 +/ \!<07!\*
#include <bits/stdc++.h>
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
using namespace std;
using ll = long long;
using db = long double; // or double, if TL is tight
using str = string; // yay python!
using pi = pair<int,int>;
using pl = pair<ll,ll>;
using pd = pair<db,db>;
using vi = vector<int>;
using vb = vector<bool>;
using vl = vector<ll>;
using vd = vector<db>;
using vs = vector<str>;
using vpi = vector<pi>;
using vpl = vector<pl>;
using vpd = vector<pd>;
using vvi = vector<vi>;
using vvl = vector<vl>;
using vvpi = vector<vpi>;
template<class T> using pq = priority_queue<T>;
template<class T> using pqg = priority_queue<T, vector<T>, greater<T>>;
// pairs
#define mp make_pair
#define f first
#define s second
// vectors
#define sz(x) int((x).size())
#define bg(x) begin(x)
#define all(x) bg(x), end(x)
#define rall(x) x.rbegin(), x.rend()
#define sor(x) sort(all(x))
#define rsz resize
#define ins insert
#define ft front()
#define bk back()
#define pb push_back
#define eb emplace_back
#define pf push_front
#define er erase
#define ub upper_bound
#define lb lower_bound
// loops
#define FOR(i,a,b) for (ll i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (ll i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)
const int MOD = 1e9+7; // 998244353;
const int MX = 2e5+5;
const ll INF = 1e18; // not too close to LLONG_MAX
const db PI = acos((db)-1);
const int dx[4] = {1,0,-1,0}, dy[4] = {0,1,0,-1}; // for every grid problem!
const char nl = '\n';
template<class T> bool ckmin(T& a, const T& b) { return b < a ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
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...);}
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
template<typename T>
using indexed_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define ook order_of_key
#define fbo find_by_order
void _input() {return;}
template <typename T, typename... V>
void _input(T &t, V&... v) {cin >> (t); if (sizeof...(v)) _input(v...);}
void __input(vi &v, const int n){F0R(i, n)cin >> v[i];}
void __input(vvi &v, const int n, const int m){F0R(i, n)F0R(j, m)cin>>v[i][j];}
ll binpow(ll a, ll b) {
ll res = 1;
while (b > 0) {
if (b & 1)
res = res * a;
a = a * a;
b >>= 1;
}
return res;
}
vl radi, vis, s;
pqg<pl> q;
vvl g;
ll vel = 0, x, n;
bool add(ll v){
if(radi[v])return 1;
trav(u, g[v]){
if(vis[u])continue;
if(vel >= s[u]){
vis[u] = x;
vel += s[u];
if(add(u))return 1;
}
else q.push({s[u], u});
}
return 0;
}
void reshi(){
if(radi[x] == -1)return;
q = pqg<pl>();
vel = s[x];
vis[x] = x;
trav(v, g[x]){
if(vel >= s[v]){
vel += s[v];
vis[v] = x;
if(add(v)){
radi[x] = 1;
return;
}
}
else q.push({s[v], v});
}
while(sz(q)){
ll w = q.top().f, v = q.top().s;
if(vel >= w){
vel += w;
vis[v] = x;
if(add(v)){
radi[x] = 1;
return;
}
}
else return;
}
FOR(i, 1, n + 1){
if(vis[i] == x)radi[i] = -1;
}
radi[x] = 1;
return;
}
void solve(){
ll m;
cin >> n >> m;
s.resize(n + 1);
FOR(i, 1, n + 1)cin >> s[i];
g.resize(n + 1);
F0R(i, m){
ll u, v;
cin >> u >> v;
g[u].pb(v);
g[v].pb(u);
}
radi.resize(n + 1, 0);
vis.resize(n + 1, 0);
vi ord(n);
F0R(i, n)ord[i] = i + 1;
shuffle(all(ord), rng);
FOR(i, 1, n + 1){
x = i;
reshi();
}
FOR(i, 1, n + 1)cout << radi[i];
cout << nl;
}
/*
*/
int main()
{
ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
int t; t = 1;while(t--){
solve();
}
return 0;
}
