// #pragma GCC target("avx") // #pragma GCC optimize("O3") // #pragma GCC optimize("unroll-loops") #include using namespace std; #define rep(i,n) for(int i = 0; i < (int)n; i++) #define FOR(n) for(int i = 0; i < (int)n; i++) #define repi(i,a,b) for(int i = (int)a; i < (int)b; i++) #define all(x) x.begin(),x.end() //#define mp make_pair #define vi vector #define vvi vector #define vvvi vector #define vvvvi vector #define pii pair #define vpii vector> template void chmax(T &a, const T &b) {a = (a > b? a : b);} template void chmin(T &a, const T &b) {a = (a < b? a : b);} using ll = long long; using ld = long double; using ull = unsigned long long; const ll INF = numeric_limits::max() / 2; const ld pi = 3.1415926535897932384626433832795028; const ll mod = 998244353; int dx[] = {1, 0, -1, 0, -1, -1, 1, 1}; int dy[] = {0, 1, 0, -1, -1, 1, -1, 1}; #define int long long void solve() { int n; cin >> n; vi a(n), b(n); vector g(n); FOR(n) { cin >> a[i] >> b[i]; --a[i]; --b[i]; g[a[i]].emplace_back(b[i], i); g[b[i]].emplace_back(a[i], i); } vi end; FOR(n) if(g[i].size() == 1) end.push_back(i); if(end.size() <= 1) { int now = (end.size() == 0? 0 : end.front()); vi done(n, false); vi ans(n, 0); while(!done[now]) { done[now] = true; ans[g[now][0].second] = now; now = g[now][0].first; } ans[g[now][0].second] = now; FOR(n) { if(ans[i] == a[i]) cout << "->" << endl; else cout << "<-" << endl; } }else { vi ans(n, 0); vi done(n, false); bool flag = true; auto dfs = [&](int v, auto self) -> void { // cout << v << endl; done[v] = true; if(g[v].size() <= 2) { for(auto e : g[v]) { if(!done[e.first]) { ans[e.second] = v; self(e.first, self); } } }else { if(!flag) return; for(auto e : g[v]) { if(!done[e.first]) { ans[e.second] = v; self(e.first, self); break; } } flag = false; } }; dfs(end[0], dfs); flag = true; dfs(end[1], dfs); FOR(n) { if(ans[i] == a[i]) cout << "->" << endl; else cout << "<-" << endl; } } } signed main() { cin.tie(nullptr); ios::sync_with_stdio(false); solve(); return 0; }