結果
問題 | No.900 aδδitivee |
ユーザー |
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提出日時 | 2019-10-05 01:11:10 |
言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
結果 |
AC
|
実行時間 | 168 ms / 2,000 ms |
コード長 | 3,111 bytes |
コンパイル時間 | 1,819 ms |
コンパイル使用メモリ | 173,300 KB |
実行使用メモリ | 36,260 KB |
最終ジャッジ日時 | 2024-10-04 03:09:07 |
合計ジャッジ時間 | 8,142 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 27 |
コンパイルメッセージ
main.cpp: In function ‘int main()’: main.cpp:136:20: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 136 | int N;scanf("%lld",&N); | ~~~~~^~~~~~~~~~~ main.cpp:140:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 140 | scanf("%lld%lld%lld",&a,&b,&c); | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:148:20: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 148 | int Q;scanf("%lld",&Q); | ~~~~~^~~~~~~~~~~ main.cpp:150:28: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 150 | int t;scanf("%lld",&t); | ~~~~~^~~~~~~~~~~ main.cpp:153:30: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 153 | scanf("%lld%lld",&a,&x); | ~~~~~^~~~~~~~~~~~~~~~~~ main.cpp:158:36: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 158 | int b;scanf("%lld",&b); | ~~~~~^~~~~~~~~~~
ソースコード
#include<bits/stdc++.h>using namespace std;#define int long long#define rep(i,n) for(int i=0;i<(n);i++)#define pb push_back#define all(v) (v).begin(),(v).end()#define fi first#define se secondtypedef vector<int>vint;typedef pair<int,int>pint;typedef vector<pint>vpint;template<typename A,typename B>inline void chmin(A &a,B b){if(a>b)a=b;}template<typename A,typename B>inline void chmax(A &a,B b){if(a<b)a=b;}template<class W,int lg=1>struct WeightedTree{struct Edge{int to;W cost;Edge(int to,W cost):to(to),cost(cost){}};int V;vector<vector<Edge>>G;vector<vector<int>>par;vector<int>dep,sz,head;vector<int>tin,tout;vector<W>dist;WeightedTree(int V):V(V),G(V),par(lg,vector<int>(V)),sz(V),dep(V),head(V),dist(V),tin(V),tout(V){}void addEdge(int a,int b,W c=W(1)){G[a].push_back(Edge(b,c));G[b].push_back(Edge(a,c));}void dfs(int v,int p,int d,W c){par[0][v]=p;dep[v]=d;sz[v]=1;dist[v]=c;for(auto &e:G[v]){if(e.to==p)continue;dfs(e.to,v,d+1,c+e.cost);sz[v]+=sz[e.to];if(G[v][0].to==p||sz[e.to]>sz[G[v][0].to])swap(G[v][0],e);}}void dfs_hld(int v,int &tt){tin[v]=tt++;for(auto &e:G[v]){if(e.to==par[0][v])continue;head[e.to]=(e.to==G[v][0].to)?head[v]:e.to;dfs_hld(e.to,tt);}tout[v]=tt;}void init(){dfs(0,-1,0,W(0));int tt=0;dfs_hld(0,tt);for(int i=0;i+1<lg;i++){for(int j=0;j<V;j++){if(par[i][j]==-1)par[i+1][j]=-1;else par[i+1][j]=par[i][par[i][j]];}}}// 1<<lg >=N-1!!!!!int getLCA(int u,int v){if(dep[u]<dep[v])swap(u,v);rep(i,lg)if((dep[u]-dep[v])>>i&1)u=par[i][u];if(u==v)return u;for(int i=lg-1;i>=0;i--)if(par[i][u]!=par[i][v])u=par[i][u],v=par[i][v];return par[0][v];}int getLength(int a,int b=0){int l=getLCA(a,b);return dep[a]+dep[b]-2*dep[l];}W getDistance(int a,int b=0){int l=getLCA(a,b);return dist[a]+dist[b]-2*dist[l];}int getPar(int v,int k=0){return par[k][v];}int getDepth(int v){return dep[v];}int getIn(int v){return tin[v];}int getOut(int v){return tout[v];}};/*0-indexedadd(k,x): a[k]+=xsum(k): sum(a[0,k])space:O(N)time:O(logN) per query*/struct BinaryIndexedTree{int n;vector<int>dat;BinaryIndexedTree(int n=0):n(n){dat.resize(n+1);}void add(int k,int x){for(k++;k<=n;k+=k&-k)dat[k]+=x;}int sum(int k){int ret=0;for(k++;k;k-=k&-k)ret+=dat[k];return ret;}};signed main(){int N;scanf("%lld",&N);WeightedTree<int,20>T(N);rep(i,N-1){int a,b,c;scanf("%lld%lld%lld",&a,&b,&c);T.addEdge(a,b,c);}T.init();BinaryIndexedTree bit0(111111),bit1(111111);int Q;scanf("%lld",&Q);while(Q--){int t;scanf("%lld",&t);if(t==1){int a,x;scanf("%lld%lld",&a,&x);bit1.add(T.getIn(a),x);bit1.add(T.getOut(a),-x);bit0.add(T.getIn(a),-T.getDepth(a)*x);bit0.add(T.getOut(a),T.getDepth(a)*x);}else{int b;scanf("%lld",&b);int ans=T.getDistance(b);ans+=bit0.sum(T.getIn(b));ans+=bit1.sum(T.getIn(b))*T.getDepth(b);printf("%lld\n",ans);}}return 0;}