結果
問題 | No.399 動的な領主 |
ユーザー | 👑 tute7627 |
提出日時 | 2019-10-04 01:29:21 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,054 ms / 2,000 ms |
コード長 | 7,507 bytes |
コンパイル時間 | 2,513 ms |
コンパイル使用メモリ | 198,072 KB |
実行使用メモリ | 37,520 KB |
最終ジャッジ日時 | 2024-10-03 06:45:50 |
合計ジャッジ時間 | 12,337 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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
6,820 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,816 KB |
testcase_03 | AC | 3 ms
6,816 KB |
testcase_04 | AC | 6 ms
6,820 KB |
testcase_05 | AC | 64 ms
6,820 KB |
testcase_06 | AC | 1,054 ms
32,824 KB |
testcase_07 | AC | 1,047 ms
31,688 KB |
testcase_08 | AC | 1,032 ms
33,664 KB |
testcase_09 | AC | 1,047 ms
33,520 KB |
testcase_10 | AC | 8 ms
6,816 KB |
testcase_11 | AC | 47 ms
6,820 KB |
testcase_12 | AC | 710 ms
33,012 KB |
testcase_13 | AC | 662 ms
31,676 KB |
testcase_14 | AC | 265 ms
37,392 KB |
testcase_15 | AC | 335 ms
37,520 KB |
testcase_16 | AC | 481 ms
35,180 KB |
testcase_17 | AC | 1,051 ms
33,644 KB |
testcase_18 | AC | 1,010 ms
32,816 KB |
ソースコード
#include<bits/stdc++.h> using namespace std; #define endl '\n' #define ALL(a) (a).begin(),(a).end() #define ALLR(a) (a).rbegin(),(a).rend() #define spa << " " << #define lfs <<fixed<<setprecision(10)<< #define test cout<<"test"<<endl; #define fi first #define se second #define MP make_pair #define PB push_back #define EB emplace_back #define rep(i,n,m) for(ll i = n; i < (ll)(m); i++) #define rrep(i,n,m) for(ll i = n - 1; i >= (ll)(m); i--) using ll = long long; using ld = long double; const ll MOD = 1e9+7; //const ll MOD = 998244353; const ll INF = 1e18; using P = pair<ll, ll>; template<typename T> void chmin(T &a,T b){if(a>b)a=b;} template<typename T> void chmax(T &a,T b){if(a<b)a=b;} void pmod(ll &a,ll b){a=(a+b)%MOD;} void pmod(ll &a,ll b,ll c){a=(b+c)%MOD;} void qmod(ll &a,ll b){a=(a*b)%MOD;} void qmod(ll &a,ll b,ll c){a=(b*c)%MOD;} ll median(ll a,ll b, ll c){return a+b+c-max({a,b,c})-min({a,b,c});} void ans1(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;} void ans2(bool x){if(x) cout<<"YES"<<endl;else cout<<"NO"<<endl;} void ans3(bool x){if(x) cout<<"Yay!"<<endl;else cout<<":("<<endl;} template<typename T1,typename T2> void ans(bool x,T1 y,T2 z){if(x)cout<<y<<endl;else cout<<z<<endl;} template<typename T> void debug(vector<vector<T>>v,ll h,ll w){for(ll i=0;i<h;i++) {cout<<v[i][0];for(ll j=1;j<w;j++)cout spa v[i][j];cout<<endl;}}; void debug(vector<string>v,ll h,ll w){for(ll i=0;i<h;i++) {for(ll j=0;j<w;j++)cout<<v[i][j];cout<<endl;}}; template<typename T> void debug(vector<T>v,ll n){if(n!=0)cout<<v[0]; for(ll i=1;i<n;i++)cout spa v[i];cout<<endl;}; template<typename T> vector<vector<T>>vec(ll x, ll y, T w){ vector<vector<T>>v(x,vector<T>(y,w));return v;} ll gcd(ll x,ll y){ll r;while(y!=0&&(r=x%y)!=0){x=y;y=r;}return y==0?x:y;} template<typename T> vector<ll>dx={1,0,-1,0,1,1,-1,-1}; vector<ll>dy={0,1,0,-1,1,-1,1,-1}; template<typename T> vector<T> make_v(size_t a,T b){return vector<T>(a,b);} template<typename... Ts> auto make_v(size_t a,Ts... ts){ return vector<decltype(make_v(ts...))>(a,make_v(ts...)); } template<typename T> struct LazySegmentTree{ using F = function<T(T,T)>; vector<T> data, lazy; ll n,lastlen = 1; F func = [](T a, T b){return a+b;}; T iden = 0; //identity element F f_lazy = [](T a, T b){return a+b;}; T iden_l = 0; F f_trans = [](T a, ll range){return a*(ll)range;}; LazySegmentTree(vector<T> v){ n = (ll)v.size(); while(lastlen < n)lastlen *= 2; data.assign(lastlen*2-1,iden); lazy.assign(lastlen*2-1,iden_l); for(ll i=0;i<n;i++)data[i+lastlen-1] = v[i]; for(ll i=lastlen-2;i>=0;i--){ data[i] = func(data[2*i+1], data[2*i+2]); } } void eval(ll k, ll left, ll right){ if(lazy[k] != iden_l){ data[k] = f_lazy(data[k], f_trans(lazy[k],right-left)); if(k <= lastlen - 2){ lazy[2*k+1] = f_lazy(lazy[2*k+1],lazy[k]); lazy[2*k+2] = f_lazy(lazy[2*k+2],lazy[k]); } lazy[k] = iden_l; } } void update(ll a,ll b,T x,ll point=0LL, ll left=0LL,ll right=-1LL){ if(right<0)right=lastlen; eval(point,left,right); if(b <= left || right <= a); else if(a <= left && right <= b ){ lazy[point] = x; eval(point,left,right); } else{ update(a,b,x,point*2+1, left, (left+right)/2); update(a,b,x,point*2+2, (left+right)/2, right); data[point] = func(data[2*point+1], data[2*point+2]); } } T query(ll a,ll b,ll point=0LL,ll left=0LL,ll right=-1LL){ if(right<0)right=lastlen; T ret = iden; eval(point,left,right); if(b <= left || right <= a); else if(a <= left && right <= b ){ ret = func(ret,data[point]); } else{ T p=query(a,b,point*2+1, left, (left+right)/2); T q=query(a,b,point*2+2, (left+right)/2, right); data[point] = func(data[2*point+1], data[2*point+2]); ret = func(ret,p); ret = func(ret,q); } return ret; } void print(){ ll num=0; for(ll i=lastlen;i>0;i/=2)num++; ll tmp=1; for(ll i=0;i<num;i++,tmp*=2){ for(ll j=0;j<tmp;j++){ if(data[tmp-1+j]==iden)cout<<"x"<<" "; else cout<<data[tmp-1+j]<<" "; }; cout<<"|"; } cout<<endl; tmp=1; for(ll i=0;i<num;i++,tmp*=2){ for(ll j=0;j<tmp;j++){ if(lazy[tmp-1+j]==iden_l)cout<<"x"<<" "; else cout<<lazy[tmp-1+j]<<" "; } cout<<"|"; } cout<<endl; } }; struct edge{ ll to,cost; edge(ll t,ll c):to(t),cost(c){}; }; struct HLD{ ll n, root; vector<ll>sz;//部分木サイズ vector<ll>depth,par,hv_chi; vector<ll>head; vector<vector<struct edge>>g;//隣接リスト vector<struct edge>edges;//データ構造に乗せるedge列 vector<ll>idx;//edge列のindexを下側の頂点から求める HLD(vector<vector<struct edge>>G,ll r) :g(G),n(G.size()),root(r){ depth.assign(n,-1),par.assign(n,-1),hv_chi.assign(n,-1); sz.assign(n,-1),head.assign(n,-1),idx.assign(n,-1); edges.emplace_back(0,0); idx[root] = 0; dfs_sz(root,0); dfs_hl(root); } ll dfs_sz(ll k, ll d){ depth[k] = d; ll sum_sz = 0; ll max_sz = 0,idx = -1; for(ll i=0;i<g[k].size();i++){ if(depth[g[k][i].to] == -1){ ll tmp_sz = dfs_sz(g[k][i].to, d+1); sum_sz += tmp_sz; if(max_sz < tmp_sz)max_sz = tmp_sz,idx = g[k][i].to; par[g[k][i].to] = k; } } hv_chi[k] = idx; sz[k] = sum_sz + 1; return sz[k]; } void dfs_hl(ll k){ if(head[k]==-1)head[k]=k; for(ll i=0;i<g[k].size();i++){ if(head[g[k][i].to]==-1&&hv_chi[k]==g[k][i].to){ head[g[k][i].to] = head[k]; idx[g[k][i].to]=edges.size(); edges.push_back(g[k][i]); dfs_hl(g[k][i].to); } } for(ll i=0;i<g[k].size();i++){ if(head[g[k][i].to]==-1&&hv_chi[k]!=g[k][i].to){ idx[g[k][i].to]=edges.size(); edges.push_back(g[k][i]); dfs_hl(g[k][i].to); } } } ll lca(ll p,ll q){ while(1){ if(depth[head[p]] > depth[head[q]])swap(p,q); if(head[p] == head[q])break; q = par[head[q]]; } if(depth[p] > depth[q])swap(p,q); return p; } vector<pair<ll,ll>>query_edge(ll p,ll q){ vector<ll>v = {p,q}; ll r=lca(p,q); vector<pair<ll,ll>>ret; for(ll i=0;i<2;i++){ while(1){ if(v[i]==r)break; if(head[v[i]]==head[r]){ ret.emplace_back(idx[r]+1,idx[v[i]]+1); break; } ret.emplace_back(idx[head[v[i]]],idx[v[i]]+1); v[i] = par[head[v[i]]]; } } return ret; } vector<pair<ll,ll>>query_vertex(ll p,ll q){ vector<ll>v = {p,q}; ll r=lca(p,q); vector<pair<ll,ll>>ret; for(ll i=0;i<2;i++){ while(1){ if(head[v[i]]==head[r]){ ret.emplace_back(idx[r]+i,idx[v[i]]+1); break; } ret.emplace_back(idx[head[v[i]]],idx[v[i]]+1); v[i] = par[head[v[i]]]; } } return ret; } }; int main(){ cin.tie(NULL); ios_base::sync_with_stdio(false); ll n;cin>>n; vector<vector<struct edge>>g(n); rep(i,0,n-1){ ll u,v;cin>>u>>v; g[u-1].EB(v-1,1); g[v-1].EB(u-1,1); } HLD hld(g,0); LazySegmentTree<ll>segtree(vector<ll>(n,0)); ll q;cin>>q; ll ret=0; rep(i,0,q){ ll a,b;cin>>a>>b; auto p=hld.query_vertex(a-1,b-1); rep(j,0,p.size()){ segtree.update(p[j].fi,p[j].se,1); ret+=segtree.query(p[j].fi,p[j].se); } } cout<<ret<<endl; return 0; }