#include #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") using namespace std; using std::cout; using std::cin; using std::endl; using ll=long long; using ld=long double; ll ILL=2167167167167167167; const int INF=2100000000; const int mod=998244353; #define rep(i,a,b) for (ll i=a;i using _pq = priority_queue, greater>; template ll LB(vector &v,T a){return lower_bound(v.begin(),v.end(),a)-v.begin();} template ll UB(vector &v,T a){return upper_bound(v.begin(),v.end(),a)-v.begin();} template bool chmin(T &a,const T &b){if(a>b){a=b;return 1;}else return 0;} template bool chmax(T &a,const T &b){if(a void So(vector &v) {sort(v.begin(),v.end());} template void Sore(vector &v) {sort(v.begin(),v.end(),[](T x,T y){return x>y;});} void yneos(bool a){if(a) cout<<"Yes\n"; else cout<<"No\n";} template void vec_out(vector &p){for(int i=0;i<(int)(p.size());i++){if(i) cout<<" ";cout< T vec_min(vector &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmin(ans,x);return ans;} template T vec_max(vector &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmax(ans,x);return ans;} template T vec_sum(vector &a){assert(!a.empty());T ans=a[0]-a[0];for(auto &x:a) ans+=x;return ans;} int pop_count(long long a){int res=0;while(a){res+=(a&1),a>>=1;}return res;} void solve(); // oddloop int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int t=1; //cin>>t; rep(i,0,t) solve(); } void solve(){ int N; cin>>N; vector> G(N); vector A(N),B(N); rep(i,0,N){ int a,b; cin>>a>>b; a--,b--; A[i]=a; B[i]=b; G[a].push_back(b); G[b].push_back(a); } vector p(N,-1); vector D(N); vector order; set> s; rep(i,0,N){ D[i]=G[i].size(); if(D[i]==1){ order.push_back(i); } } rep(i,0,(int)(order.size())){ int a=order[i]; for(auto x:G[a]){ if(D[x]==0) continue; p[a]=x; s.insert({x,a}); D[x]--; if(D[x]==1) order.push_back(x); } D[a]=0; } rep(i,0,N){ if(D[i]==0) continue; int ind=i; while(D[ind]!=0){ for(auto x:G[ind]){ if(p[x]!=ind){ p[ind]=x; D[x]--; D[ind]--; s.insert({x,ind}); ind=x; break; } } } } rep(i,0,N){ if(s.count({A[i],B[i]})) cout<<"<-\n"; else cout<<"->\n"; } }