#include <bits/stdc++.h>
using namespace std;
const int N = 3e5 + 5,M = 6e5 + 5,Lg = 19;
int n,m;
int fir[N],nxt[M],to[M],ect = 1;
inline void addedge(int u1,int v1) {
	nxt[++ect] = fir[u1];fir[u1] = ect;to[ect] = v1;
}

int U[M],V[M];
vector<int> par[N],G[N];
bool vst[N];
int dep[N];

const int Sz = M << 5;
int rt[N],lc[Sz],rc[Sz],sum[Sz],tot = 0;
void insert(int &k,int l,int r,int pos,int v) {
	if(!k) k = ++tot;
	sum[k] += v;
	if(l == r) return;
	int mid = l + r >> 1;
	if(pos <= mid) insert(lc[k],l,mid,pos,v);
	else insert(rc[k],mid + 1,r,pos,v);
}
int Merge(int x,int y) {
	if(!x || !y) return x + y;
	int p = ++tot;
	sum[p] = sum[x] + sum[y];
	lc[p] = Merge(lc[x],lc[y]);
	rc[p] = Merge(rc[x],rc[y]);
	return p;
}
int Query(int k,int l,int r,int x,int y) {
	if(!k || x > y) return 0;
	if(x <= l && r <= y) return sum[k];
	int mid = l + r >> 1;
	if(y <= mid) return Query(lc[k],l,mid,x,y);
	else if(x > mid) return Query(rc[k],mid + 1,r,x,y);
	else return Query(lc[k],l,mid,x,y) + Query(rc[k],mid + 1,r,x,y);
}
int anc[Lg][N];
int sze[N];
void dfs(int x) {
	vst[x] = true;sze[x] = 1;//printf("anc[0][%d]=%d,%d\n",x,anc[0][x],dep[x]);
	for(int i = 1;i < Lg;i++) anc[i][x] = anc[i - 1][anc[i - 1][x]];
	for(auto y : par[x])
		if(vst[y]) insert(rt[x],1,n,dep[y],1);
	for(int i = fir[x],y;y = to[i],i;i = nxt[i])
		if(!vst[y]) {

			G[x].push_back(y);
			anc[0][y] = x;
			dep[y] = dep[x] + 1;
			dfs(y);sze[x] += sze[y];
			rt[x] = Merge(rt[x],rt[y]);
			// printf("%d->%d\n",x,y);
		}
}
inline int jump(int x,int y) {
	for(int i = Lg - 1;i >= 0;i--)
		if(dep[anc[i][x]] > dep[y]) x = anc[i][x];
	return x;
}
inline bool Ask(int u,int v) {
	if(dep[u] > dep[v]) swap(u,v);
	int pp = jump(v,u);
	// printf("jp:%d,%d,%d,%d,%d\n",u,v,pp,dep[u],dep[v]);
	if(u != 1) {
		for(auto t : G[u])
		if(t != pp && !Query(rt[t],1,n,1,dep[u] - 1)) return false;
	}
	else {
		if(G[u].size() > 2) return false;
		if(G[u].size() == 2 && (pp != v || G[v].size())) return false;
	}
	if(pp != v && sze[pp] != 1 && u != 1 && !(Query(rt[pp],1,n,1,dep[u] - 1) - Query(rt[v],1,n,1,dep[u] - 1))) return false;
	for(auto t : G[v])
		if(sze[t] != n - 2 && !Query(rt[t],1,n,1,dep[v] - 1)) return false;
	return true;
}
int main() {
	cin >> n >> m;
	for(int i = 1;i <= m;i++) {
		cin >> U[i] >> V[i],addedge(U[i],V[i]),addedge(V[i],U[i]);
		par[U[i]].push_back(V[i]);
		par[V[i]].push_back(U[i]);
	}
	dfs(1);
	for(int i = 1;i <= m;i++)
		if(Ask(U[i],V[i])) putchar('1'); else putchar('0');
	return 0;
}