#include #include using namespace std; #define DEBUG(x) cerr<<#x<<": "< #define vl vector #define vii vector< vector > #define vll vector< vector > #define vs vector #define pii pair #define pis pair #define psi pair #define pll pair template pair operator+(const pair &s, const pair &t) { return pair(s.first + t.first, s.second + t.second); } template pair operator-(const pair &s, const pair &t) { return pair(s.first - t.first, s.second - t.second); } template ostream& operator<<(ostream& os, pair p) { os << "(" << p.first << ", " << p.second << ")"; return os; } #define X first #define Y second #define rep(i,n) for(int i=0;i<(n);i++) #define rep1(i,n) for(int i=1;i<=(n);i++) #define rrep(i,n) for(int i=(n)-1;i>=0;i--) #define rrep1(i,n) for(int i=(n);i>0;i--) #define REP(i,a,b) for(int i=a;i bool chmax(T &a, const T &b) { if (a bool chmin(T &a, const T &b) { if (a>b) { a = b; return 1; } return 0; } #define UNIQUE(v) v.erase(std::unique(v.begin(), v.end()), v.end()); const ll inf = 1000000001; const ll INF = (ll)1e18 + 1; const double pi = 3.14159265358979323846; #define Sp(p) cout<sub[G[v][0]]) swap(u,G[v][0]); } } void dfs_hld(int v,int c,int &pos) { vid[v]=pos++; inv[vid[v]]=v; type[v]=c; for(int u:G[v]){ if(u==par[v]) continue; head[u]=(u==G[v][0]?head[v]:u); dfs_hld(u,c,pos); } } public: vector< vector > G; vector vid, head, sub, par, dep, inv, type; HLD(int n): G(n),vid(n,-1),head(n),sub(n,1), par(n,-1),dep(n,0),inv(n),type(n){} void add_edge(int u,int v) { G[u].emplace_back(v); G[v].emplace_back(u); } void build(vector rs={0}) { int c=0,pos=0; for(int r:rs){ dfs_sz(r); head[r]=r; dfs_hld(r,c++,pos); } } int lca(int u,int v){ while(1){ if(vid[u]>vid[v]) swap(u,v); if(head[u]==head[v]) return u; v=par[head[v]]; } } int distance(int u,int v){ return dep[u]+dep[v]-2*dep[lca(u,v)]; } // for_each(vertex) // [l, r) <- attention!! template void for_each(int u, int v, const F& f) { while(1){ if(vid[u]>vid[v]) swap(u,v); f(max(vid[head[v]],vid[u]),vid[v]+1); if(head[u]!=head[v]) v=par[head[v]]; else break; } } template T for_each(int u,int v,T ti,const Q &q,const F &f){ T l=ti,r=ti; while(1){ if(vid[u]>vid[v]){ swap(u,v); swap(l,r); } l=f(l,q(max(vid[head[v]],vid[u]),vid[v]+1)); if(head[u]!=head[v]) v=par[head[v]]; else break; } return f(l,r); } // for_each(edge) // [l, r) <- attention!! template void for_each_edge(int u, int v,const F& f) { while(1){ if(vid[u]>vid[v]) swap(u,v); if(head[u]!=head[v]){ f(vid[head[v]],vid[v]+1); v=par[head[v]]; }else{ if(u!=v) f(vid[u]+1,vid[v]+1); break; } } } }; signed main() { fio(); int n; cin >> n; HLD hld(n); rep (i, n - 1) { int u, v; cin >> u >> v; u--; v--; hld.add_edge(u, v); } hld.build(); int q; cin >> q; rep (i, q) { char t; cin >> t; if (t == 'x') { int i; cin >> i; vii x(2, vi(2)); rep (i, 2) rep (j, 2) cin >> x[i][j]; } else { int u, v; cin >> u >> v; u--; v--; assert(hld.vid[v] <= hld.vid[u]); } } }