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 12.3.0 + boost 1.83.0) |
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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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 3 ms
5,248 KB |
testcase_04 | AC | 3 ms
5,248 KB |
testcase_05 | AC | 11 ms
5,760 KB |
testcase_06 | AC | 134 ms
28,716 KB |
testcase_07 | AC | 134 ms
28,828 KB |
testcase_08 | AC | 139 ms
28,760 KB |
testcase_09 | AC | 130 ms
28,876 KB |
testcase_10 | AC | 3 ms
5,248 KB |
testcase_11 | AC | 11 ms
5,888 KB |
testcase_12 | AC | 111 ms
29,300 KB |
testcase_13 | AC | 112 ms
29,276 KB |
testcase_14 | AC | 103 ms
42,976 KB |
testcase_15 | AC | 105 ms
42,976 KB |
testcase_16 | AC | 101 ms
35,344 KB |
testcase_17 | AC | 133 ms
28,732 KB |
testcase_18 | AC | 133 ms
28,872 KB |
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-indexed mt19937 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; }