結果
問題 | No.1094 木登り / Climbing tree |
ユーザー | east1016 |
提出日時 | 2020-08-25 16:10:30 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,209 ms / 2,000 ms |
コード長 | 8,712 bytes |
コンパイル時間 | 3,344 ms |
コンパイル使用メモリ | 234,760 KB |
実行使用メモリ | 92,320 KB |
最終ジャッジ日時 | 2024-11-08 07:02:57 |
合計ジャッジ時間 | 29,495 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 | 1,148 ms
90,140 KB |
testcase_02 | AC | 409 ms
92,320 KB |
testcase_03 | AC | 69 ms
7,656 KB |
testcase_04 | AC | 347 ms
41,076 KB |
testcase_05 | AC | 794 ms
78,608 KB |
testcase_06 | AC | 330 ms
30,488 KB |
testcase_07 | AC | 1,142 ms
90,140 KB |
testcase_08 | AC | 1,146 ms
90,140 KB |
testcase_09 | AC | 1,150 ms
90,140 KB |
testcase_10 | AC | 1,150 ms
90,140 KB |
testcase_11 | AC | 1,187 ms
90,016 KB |
testcase_12 | AC | 1,209 ms
90,140 KB |
testcase_13 | AC | 1,175 ms
90,144 KB |
testcase_14 | AC | 1,153 ms
90,140 KB |
testcase_15 | AC | 284 ms
22,964 KB |
testcase_16 | AC | 684 ms
70,924 KB |
testcase_17 | AC | 485 ms
43,276 KB |
testcase_18 | AC | 381 ms
33,236 KB |
testcase_19 | AC | 615 ms
59,856 KB |
testcase_20 | AC | 1,209 ms
90,072 KB |
testcase_21 | AC | 496 ms
46,408 KB |
testcase_22 | AC | 1,161 ms
90,268 KB |
testcase_23 | AC | 1,133 ms
90,268 KB |
testcase_24 | AC | 1,180 ms
90,140 KB |
testcase_25 | AC | 1,183 ms
90,140 KB |
testcase_26 | AC | 1,172 ms
90,144 KB |
ソースコード
#include <bits/stdc++.h> // ver2.7.1 #define int long long #define endl "\n" // fflush(stdout); #define ALL(v) (v).begin(),(v).end() #define Vi vector<int> #define VVi vector<Vi> #define VVVi vector<VVi> #define Vm vector<mint> #define Vs vector<string> #define Vd vector<double> #define Vc vector<char> #define Pii pair<int,int> #define Pdd pair<double,double> #define VPii vector<Pii> #define Tiii tuple<int,int,int> #define VTiii vector<Tiii> #define PQi priority_queue<int> #define PQir priority_queue<int,vector<int>,greater<int>> #define pb push_back #define mp make_pair #define mt make_tuple #define itos to_string #define stoi stoll #define FI first #define SE second #define cYES cout<<"YES"<<endl #define cNO cout<<"NO"<<endl #define cYes cout<<"Yes"<<endl #define cNo cout<<"No"<<endl #define cyes cout<<"yes"<<endl #define cno cout<<"no"<<endl #define sortr(v) sort(v,greater<>()) #define rep(i,a,b) for(int i=a;i<b;i++) #define repeq(i,a,b) for(int i=a;i<=b;i++) #define repreq(i,a,b) for(int i=a;i>=b;i--) #define dem(a,b) ((a+b-1)/(b)) #define INF 3000000000000000000 // 3.0*10^18 #define MAX LLONG_MAX #define PI acos(-1.0L) int MOD = 998244353; // case //const int MOD = 1000000007; // 10^9 + 7 const double EPS = 1e-10; using namespace std; struct mint{int x;mint(int x=0):x((x%MOD+MOD)%MOD){} mint operator-()const{return mint(-x);} mint& operator+=(const mint a){if((x+=a.x)>=MOD)x-=MOD;return*this;} mint& operator-=(const mint a){if((x+=MOD-a.x)>=MOD)x-=MOD;return*this;} mint& operator*=(const mint a){(x*=a.x)%=MOD;return*this;} mint operator+(const mint a)const{return mint(*this)+=a;} mint operator-(const mint a)const{return mint(*this)-=a;} mint operator*(const mint a)const{return mint(*this)*=a;} mint pow(int t)const{if(!t)return 1;mint a=pow(t>>1);a*=a;if(t&1)a*=*this;return a;} mint inv()const{return pow(MOD-2);} mint& operator/=(const mint a){return*this*=a.inv();} mint operator/(const mint a)const{return mint(*this)/=a;}}; istream& operator>>(istream& is, const mint& a) {return is >> a.x;} ostream& operator<<(ostream& os, const mint& a) {return os << a.x;} /* debug */ template <typename T> // vector ostream& operator<<(ostream& os,const vector<T> &V){int N=V.size(); if(N==0){os<<'.';return os;}rep(i,0,N-1){os<<V[i]<<' ';}os<<V[N-1];return os;} template <typename T> // vector vector ostream& operator<<(ostream& os,const vector<vector<T>> &V){ int N=V.size();rep(i,0,N-1)cout<<V[i]<<endl;cout<<V[N-1];return os;} template <typename T,typename S> // pair ostream& operator<<(ostream& os, pair<T,S> const&P){os<<P.FI<<' '<<P.SE;return os;} template <typename T> // set ostream& operator<<(ostream& os,set<T> &S){auto it=S.begin();while(it!=S.end()){ os<<*it;if(next(it,1)!=S.end())os<<' ';it++;};return os;} template <typename T> // deque ostream& operator<<(ostream& os, deque<T> &q){for(auto it=q.begin();it<q.end();it++){ os<<*it;if(it+1!=q.end())os<<" ";}return os;} /* useful */ template<typename T>void Vin(vector<T> &v){int n=v.size();rep(i,0,n)cin>>v[i];} int gcd(int a,int b){return b?gcd(b,a%b):a;} int lcm(int a,int b){return a/gcd(a,b)*b;} int mypow(int x, int n, int m){ if(n==0)return 1;if(n%2==0)return mypow(x*x%m,n/2,m);else return x*mypow(x,n-1,m)%m;} int scomb(int n, int r){if(r<0||r>n)return 0;if((n-r)<r)r=n-r; // nCr int a=1;for(int i=n;i>n-r;--i){a=a*i;}for(int i=1;i<r+1;++i){a=a/i;}return a;} Vi vis(Vi &v){Vi S(v.size()+1);rep(i,1,S.size())S[i]+=v[i-1]+S[i-1];return S;} int digitsum(int n){int ret=0; while(n>0){ret+=n%10;n/=10;}return ret;} int digit(int k,int i){string s = itos(k);return s[s.size()-i]-'0';} // i桁目の数字 template<typename T>void press(T &v){v.erase(unique(ALL(v)),v.end());} // 圧縮 Vi zip(Vi b){int Z=b.size(); // 座標圧縮 Pii p[Z+10];int a=b.size();Vi l(a);for(int i=0;i<a;i++) p[i]=mp(b[i],i);sort(p,p+a);int w=0;for(int i=0;i<a;i++) {if(i&&p[i].first!=p[i-1].first)w++;l[p[i].second]=w;}return l;} Vi nibe2V(){Vi a(60);int q = 1;rep(i,0,60){a[i]=q;q*=2;}return a;} //Vi nibe = nibe2V(); // 2^n int modiv(int a,int b){return a*mypow(b,MOD-2,MOD)%MOD;} // a÷b(%MOD) int SMALLER(Vi &a,int x){return lower_bound(a.begin(),a.end(),x)-a.begin();} int orSMALLER(Vi &a,int x){return upper_bound(a.begin(),a.end(),x)-a.begin();} int BIGGER(Vi &a,int x){return a.size()-orSMALLER(a,x);} int orBIGGER(Vi &a,int x){return a.size()-SMALLER(a,x);} int COUNT(Vi &a,int x) {return upper_bound(ALL(a),x)-lower_bound(ALL(a),x);} int maxind(Vi &a){return max_element(ALL(a))-a.begin();} int minind(Vi &a){return min_element(ALL(a))-a.begin();} Vi stpowV(){Vi a(1000005);a[0]=1;repeq(i,1,1000004)a[i]=a[i-1]*i%MOD;return a;} //Vi stpow = stpowV(); // 階乗配列(%MOD) /****************************** START ******************************/ struct TreeAna { VVi parII; VPii memot; Vi treeFI; Vi par; Vi dep; VVi chi; Vi chisize; Vi longest; TreeAna(int n) { par = Vi(n); dep = Vi(n); chi = VVi(n); } void set_lca(){ int n = par.size(); parII = VVi(n,Vi(20,-1)); rep(i,0,n) parII[i][0] = par[i]; rep(i,0,19){ rep(j,0,n){ if(parII[j][i] == -1) parII[j][i+1] = -1; else parII[j][i+1] = parII[parII[j][i]][i]; } } return; } int lca(int u,int v) { // 頂点uと頂点vの共通の"先祖"で一番近いやつを返す if(dep[u] > dep[v]) swap(u,v); for(int i=19;i>=0;i--) { if(((dep[v]-dep[u])>>i)&1) v = parII[v][i]; } if(u==v) return u; for(int i=19;i>=0;i--) { if(parII[u][i] != parII[v][i]){ u = parII[u][i]; v = parII[v][i]; } } return parII[u][0]; } void connect(int a,int b) { memot.pb(mp(a,b)); memot.pb(mp(b,a)); return; } void preset() { sort(ALL(memot)); rep(i,0,memot.size()) treeFI.pb(memot[i].FI); return; } void make(int root) { int st,en,now; int n = par.size(); par = Vi(n,-2); dep = par; chi = VVi(n,Vi(0)); par[root] = -1; dep[root] = 0; queue<int> next; next.push(root); while(!next.empty()){ now = next.front(); next.pop(); st = lower_bound(ALL(treeFI), now)-treeFI.begin(); en = upper_bound(ALL(treeFI), now)-treeFI.begin(); rep(i,st,en){ if(par[memot[i].SE]!=-2) continue; next.push(memot[i].SE); chi[now].pb(memot[i].SE); par[memot[i].SE] = now; dep[memot[i].SE] = dep[now]+1; } } } void makechisize() { int n = par.size(); chisize = Vi(n,0); Vi chinasi(0); rep(i,0,n) if(chi[i].size()==0) chinasi.pb(i); VVi dev(n+5); rep(i,0,n) { dev[dep[i]].pb(i); } repreq(i,n+3,0){ rep(j,0,dev[i].size()){ if(par[dev[i][j]]==-1) continue; chisize[par[dev[i][j]]] += chisize[dev[i][j]]+1; } } return; } void makelongest() { int n = par.size(); longest = Vi(n,-1); Vi chinasi(0); rep(i,0,n) {if(chi[i].size()==0) chinasi.pb(i);} rep(i,0,chinasi.size()){ int now = chinasi[i]; int ct = 0; while(1) { if(longest[now] >= ct) break; else { longest[now] = ct; ct++; if(par[now] == -1) break; now = par[now]; } } } return; } /* 使い方 */ /* TreeAna tree(n) // 宣言 nは頂点数 tree.connect(a,b) // 頂点aとbをつなぐ(0-index) tree.preset() // 頂点をつなぎ終わったら必ずこれをする!!! tree.make(k) // 頂点kを根としてpar,dep,chiを作り上げる tree.makechisize(); // 頂点が持つ子の総数の配列 Vi chisize を作り上げる tree.makelongest(); // 頂点から何回下にいけるかのヤツ(Vi longest)を作り上げる tree.set_lca() // lcaを使う前に必ずこれをする!!! tree.lca(a,b) // 頂点aとbの共通の"先祖"で一番近い"頂点"を返す */ }; signed main() { cin.tie(0);cout.tie(0);ios::sync_with_stdio(false);cout<<fixed<<setprecision(12); int n;cin >> n; TreeAna tree(n); map<Pii,int> co; rep(i,0,n-1){ int qw,er,ty; cin >> qw >> er >> ty; qw--,er--; co[mp(qw,er)] = ty; co[mp(er,qw)] = ty; tree.connect(qw,er); } tree.preset(); tree.make(0); queue<int> ne; ne.push(0); Vi wa(n); while(!ne.empty()){ int now = ne.front(); ne.pop(); rep(i,0,tree.chi[now].size()){ wa[tree.chi[now][i]] += co[mp(now,tree.chi[now][i])]+wa[now]; ne.push(tree.chi[now][i]); } } //cout << wa << endl; tree.set_lca(); int q;cin >> q; rep(i,0,q){ int qw,er; cin >> qw >> er; qw--,er--; int ty = tree.lca(qw,er); cout << wa[qw] + wa[er] - wa[ty]*2 << endl; } return 0; }