結果
| 問題 | No.399 動的な領主 |
| ユーザー |
 koyumeishi
|
| 提出日時 | 2016-07-14 23:46:53 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 139 ms / 2,000 ms |
| コード長 | 8,917 bytes |
| コンパイル時間 | 1,563 ms |
| コンパイル使用メモリ | 121,100 KB |
| 実行使用メモリ | 42,976 KB |
| 最終ジャッジ日時 | 2024-11-07 18:31:38 |
| 合計ジャッジ時間 | 3,793 ms |
|
ジャッジサーバーID （参考情報） |
judge2 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 19 |
ソースコード
/*### ############## ################################################################################################################################################ ##################################### ####### ############################ ################# ################### # ########################## ######### ################################### # ########################### ############## ################################ ######### ################################### ####### ###################################### # ####### ################################################ ################################################ ################################################ ############################################## ########################################## ################################# ######################### ################ ######## ### ## # ## # # # # # #### #### #### #### ##### # # # # ## # # # # # # #____# ### #/ # # ## # # # # # # # #^^^^ ### ###/# # # # #### #### ###/# #### ####*/#include <iostream>#include <vector>#include <cstdio>#include <sstream>#include <map>#include <string>#include <algorithm>#include <queue>#include <cmath>#include <functional>#include <set>#include <ctime>#include <random>#include <chrono>#include <cassert>using namespace std;namespace {using Integer = long long; //__int128;template<class T> istream& operator >> (istream& is, vector<T>& vec){for(T& val: vec) is >> val; return is;}template<class T> istream& operator , (istream& is, T& val){ return is >> val;}template<class T> ostream& operator << (ostream& os, const vector<T>& vec){for(int i=0; i<vec.size(); i++) os << vec[i] << (i==vec.size()-1?"":" "); return os;}template<class T> ostream& operator , (ostream& os, const T& val){ return os << " " << val;}template<class H> void print(const H& head){ cout << head; }template<class H, class ... T> void print(const H& head, const T& ... tail){ cout << head << " "; print(tail...); }template<class ... T> void println(const T& ... values){ print(values...); cout << endl; }template<class H> void eprint(const H& head){ cerr << head; }template<class H, class ... T> void eprint(const H& head, const T& ... tail){ cerr << head << " "; eprint(tail...); }template<class ... T> void eprintln(const T& ... values){ eprint(values...); cerr << endl; }class range{long long start_, end_, step_;public:struct range_iterator{long long val, step_;range_iterator(long long v, long long step) : val(v), step_(step) {}long long operator * (){return val;}void operator ++ (){val += step_;}bool operator != (range_iterator& x){return step_ > 0 ? val < x.val : val > x.val;}};range(long long len) : start_(0), end_(len), step_(1) {}range(long long start, long long end) : start_(start), end_(end), step_(1) {}range(long long start, long long end, long long step) : start_(start), end_(end), step_(step) {}range_iterator begin(){ return range_iterator(start_, step_); }range_iterator end(){ return range_iterator( end_, step_); }};string operator "" _s (const char* str, size_t size){ return move(string(str)); }constexpr Integer my_pow(Integer x, Integer k, Integer z=1){return k==0 ? z : k==1 ? z*x : (k&1) ? my_pow(x*x,k>>1,z*x) : my_pow(x*x,k>>1,z);}constexpr Integer my_pow_mod(Integer x, Integer k, Integer M, Integer z=1){return k==0 ? z%M : k==1 ? z*x%M : (k&1) ? my_pow_mod(x*x%M,k>>1,M,z*x%M) : my_pow_mod(x*x%M,k>>1,M,z);}constexpr unsigned long long operator "" _ten (unsigned long long value){ return my_pow(10,value); }inline int k_bit(Integer x, int k){return (x>>k)&1;} //0-indexedmt19937 mt(chrono::duration_cast<chrono::nanoseconds>(chrono::steady_clock::now().time_since_epoch()).count());template<class T> string join(const vector<T>& v, const string& sep){stringstream ss; for(int i=0; i<v.size(); i++){ if(i>0) ss << sep; ss << v[i]; } return ss.str();}string operator * (string s, int k){ string ret; while(k){ if(k&1) ret += s; s += s; k >>= 1; } return ret; }}template<class T>class SparseTable{public:SparseTable(vector<T>& vec, T default_value_, function<T(T,T)> eval): col(vec.size()), default_value(default_value_){evaluate = eval;row = 1;while((1<<row) < col) row += 1;row++;table = vector<vector<int>>(row, vector<int>(col));logk.resize(vec.size()+1, 0);for(int i=2, k=1; i<logk.size(); i++){if((1<<k) < (i&-i)) k++;logk[i] = k;}set(vec);}void set(vector<T>& vec){assert(col == vec.size());values = &vec;vector<T>& val = vec;iota(table[0].begin(), table[0].end(), 0);for(int k=1; k<row; k++){for(int i=0; i + (1<<k)-1 < col; i++){auto left = val[table[k-1][i]];auto right = val[table[k-1][i+(1<<(k-1))]];if(left == evaluate(left,right)){table[k][i] = table[k-1][i];}else{table[k][i] = table[k-1][i+(1<<(k-1))];}}}}//[l,r)T get(int l, int r){if(l>=r) return default_value;vector<T>& val = *values;T ret = default_value;int k = logk[r-l];//while((1<<(k+1)) < (r-l)) k++;auto left = val[ table[k][l] ];auto right = val[ table[k][r-(1<<k)] ];ret = evaluate(left, right);return ret;}private:int col;int row;T default_value;vector<T>* values;vector<vector<int>> table;vector<int> logk;function<T(T,T)> evaluate;};int main(){int n;scanf("%d", &n);vector<vector<int>> G(n+1);G[0].push_back(1);G[1].push_back(0);for(int _ : range(n-1)){int u,v;scanf("%d%d", &u, &v);G[u].push_back(v);G[v].push_back(u);}vector<int> parent(n+1, 0);vector<int> depth (n+1, 0);vector<int> a(n+1, 0);vector<pair<int,int>> b;function<void(int,int)> EulerTour = [&](int pos, int last){parent[pos] = last;depth[pos] = depth[last] + 1;a[pos] = b.size();b.push_back({depth[pos], pos});for(int nx : G[pos]){if(nx == last) continue;EulerTour(nx, pos);b.push_back({depth[pos], pos});}};EulerTour(1, 0);SparseTable< pair<int,int> > t(b, {8_ten, 8_ten}, [&](pair<int,int> a, pair<int,int> b){return a<b ? a : b;});vector<long long> s(n+1, 0);vector<vector<int>> d( *max_element(depth.begin(), depth.end()) + 1 );for(int v : range(1, n+1)){d[ depth[v] ].push_back( v );}int q;scanf("%d", &q);while(q--){int u,v;scanf("%d%d", &u, &v);int p = t.get( min(a[u], a[v]), max(a[u], a[v]) ).second;s[u]++;s[v]++;s[p]--;s[ parent[p] ]--;}long long ans = 0;for(int dd=d.size()-1; dd>0; dd--){for(int v : d[dd]){ans += s[v] * (s[v] + 1) / 2;s[ parent[v] ] += s[v];}}println(ans);return 0;}