#include #include using namespace std; using namespace atcoder; istream &operator>>(istream &is, modint &a) { long long v; is >> v; a = v; return is; } ostream &operator<<(ostream &os, const modint &a) { return os << a.val(); } istream &operator>>(istream &is, modint998244353 &a) { long long v; is >> v; a = v; return is; } ostream &operator<<(ostream &os, const modint998244353 &a) { return os << a.val(); } istream &operator>>(istream &is, modint1000000007 &a) { long long v; is >> v; a = v; return is; } ostream &operator<<(ostream &os, const modint1000000007 &a) { return os << a.val(); } typedef long long ll; typedef vector> Graph; typedef pair pii; typedef pair pll; #define FOR(i,l,r) for (int i = l;i < (int)(r); i++) #define rep(i,n) for (int i = 0;i < (int)(n); i++) #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(), x.rend() #define my_sort(x) sort(x.begin(), x.end()) #define my_max(x) *max_element(all(x)) #define my_min(x) *min_element(all(x)) template inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } const int INF = (1<<30) - 1; const ll LINF = (1LL<<62) - 1; const int MOD = 998244353; const int MOD2 = 1e9+7; const double PI = acos(-1); vector di = {1,0,-1,0}; vector dj = {0,1,0,-1}; #ifdef LOCAL # include # define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__) #else # define debug(...) (static_cast(0)) #endif const int L = 6; int main(){ cin.tie(0); ios_base::sync_with_stdio(false); int N; cin >> N; Graph g(N); rep(i,N - 1){ int a, b; cin >> a >> b; g[a - 1].push_back(b - 1); g[b - 1].push_back(a - 1); } int M; cin >> M; vector V(N); // お化けがいる rep(i,M) { int v; cin >> v; V[v - 1] = true; } vector c(N); // 何匹のお化けに囲まれるか rep(i,N){ if(V[i])c[i]++; for(int nxt : g[i])if(V[nxt])c[i]++; } vector d(N); // 囲う頂点が自身だけの隣接頂点数 rep(i,N){ if(!V[i])continue; for(int nxt : g[i])if(c[nxt] == 1)d[i]++; } int wa = 0; rep(i,N)if(c[i] > 0) wa++; rep(i,N){ int ans = wa; if(c[i] > 0) ans--; for(int nxt : g[i]){ if(V[nxt]) { // 隣接頂点のお化けが消えることによる周りの差分 ans -= d[nxt]; if(c[i] == 1) ans++; // 自身を引きすぎた分戻す } if(c[nxt] > 0){ // 隣接頂点自身の差分 int tmp = c[nxt]; if(V[i]) tmp--; if(V[nxt]) tmp--; if(tmp == 0) ans--; } } cout << ans << endl; } }