func_code_string: #include <bits/stdc++.h>   using namespace std;   template <typename T>   inline bool smin(T &a, const T &b) {     return b < a ? a = b, 1 : 0;   }   template <typename T>   inline bool smax(T &a, const T &b) {     return a < b ? a = b, 1 : 0;   }   const long long N = 1e5 + 100, lg = 22;   long long n, k, add[N], h[N];   vector<pair<long long, long long> > adj[N];   long long par[N][lg];   void dfs(long long v = 1, long long p = -1, long long dep = 0) {     if (v != 1) {       par[v][0] = p;       for (long long i = 1; i < lg; i++) par[v][i] = par[par[v][i - 1]][i - 1];     } else {       for (long long i = 0; i < lg; i++) par[v][i] = v;     }     h[v] = dep;     for (auto u : adj[v])       if (u.first != p) dfs(u.first, v, dep + 1);   }   long long getPar(long long v, long long k) {     for (long long i = lg - 1; i >= 0; i--)       if (k >> i & 1) v = par[v][i];     return v;   }   long long lca(long long u, long long v) {     if (h[u] > h[v]) swap(u, v);     v = getPar(v, h[v] - h[u]);     if (u == v) return v;     for (long long i = lg - 1; i >= 0; i--) {       if (par[u][i] != par[v][i]) u = par[u][i], v = par[v][i];     }     return par[v][0];   }   long long ans[N];   long long calc(long long v = 1, long long p = -1, long long want = -1) {     long long res = add[v];     for (auto u : adj[v]) {       if (u.first == p) continue;       res += calc(u.first, v, u.second);     }     if (want != -1) ans[want] = res;     return res;   }   int32_t main() {     cin >> n;     for (long long i = 0; i < n - 1; i++) {       long long u, v;       cin >> u >> v;       adj[v].push_back({u, i}), adj[u].push_back({v, i});     }     dfs();     cin >> k;     while (k--) {       long long u, v;       cin >> u >> v;       long long l = lca(u, v);       add[u]++, add[v]++, add[l] -= 2;     };     calc();     for (long long i = 0; i < n - 1; i++) cout << ans[i] <<    ;   }   