結果
問題 | No.900 aδδitivee |
ユーザー |
|
提出日時 | 2020-04-06 18:14:54 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 379 ms / 2,000 ms |
コード長 | 4,262 bytes |
コンパイル時間 | 2,029 ms |
コンパイル使用メモリ | 79,532 KB |
実行使用メモリ | 91,952 KB |
最終ジャッジ日時 | 2024-07-06 15:01:50 |
合計ジャッジ時間 | 12,298 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 27 |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.ArrayList; import java.util.Arrays; import java.util.NoSuchElementException; class Edge{ int src,dst; long cost; public Edge(int src_,int dst_,long cost_) { src=src_; dst=dst_; cost=cost_; } } class BIT{ int n; long[] a; public BIT(int n) { this.n=n; a=new long[n+1]; } void add(int k,long v) { for(++k;k<=n;k+=k&-k) { a[k]+=v; } } //[0...k] long sum(int k) { long ret=0; for(++k;k>0;k-=k&-k) { ret+=a[k]; } return ret; } // (l...r] long sum(int l,int r) { return sum(r-1)-sum(l-1); } } public class Main implements Runnable{ public static void main(String[] args) { new Thread(null,new Main(), "" ,Runtime.getRuntime().maxMemory()).start(); } int pointer=0; void dfs(int cur,int par,ArrayList<Edge>[] g,long[] base,int[] depth,int[] in,int[] out) { in[cur]=pointer++; for(Edge e:g[cur]) { if(e.dst==par)continue; base[e.dst]=base[cur]+e.cost; depth[e.dst]=depth[cur]+1; dfs(e.dst,cur,g,base,depth,in,out); } out[cur]=pointer; } public void run() { FastScanner sc=new FastScanner(); PrintWriter pw=new PrintWriter(System.out); int N=sc.nextInt(); ArrayList<Edge>[] g=new ArrayList[N]; long[] base=new long[N]; int[] depth=new int[N]; long[] A=new long[N]; int[] in=new int[N]; int[] out=new int[N]; BIT bit0=new BIT(N); BIT bit1=new BIT(N); for(int i=0;i<N;++i)g[i]=new ArrayList<>(); for(int i=0;i<N-1;++i) { int u=sc.nextInt(); int v=sc.nextInt(); int w=sc.nextInt(); g[u].add(new Edge(u,v,w)); g[v].add(new Edge(v,u,w)); } dfs(0,-1,g,base,depth,in,out); int Q=sc.nextInt(); for(int q=0;q<Q;++q) { int type=sc.nextInt(); if(type==1) { int a=sc.nextInt(); int x=sc.nextInt(); bit0.add(in[a], -x*depth[a]); bit0.add(out[a], x*depth[a]); bit1.add(in[a], x); bit1.add(out[a], -x); }else { int b=sc.nextInt(); pw.println(bit0.sum(0,in[b]+1)+bit1.sum(0,in[b]+1)*depth[b]+base[b]); } } pw.close(); } void tr(Object...objects) {System.out.println(Arrays.deepToString(objects));} } class FastScanner { private final InputStream in = System.in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; private boolean hasNextByte() { if (ptr < buflen) { return true; }else{ ptr = 0; try { buflen = in.read(buffer); } catch (IOException e) { e.printStackTrace(); } if (buflen <= 0) { return false; } } return true; } private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;} private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;} public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();} public String next() { if (!hasNext()) throw new NoSuchElementException(); StringBuilder sb = new StringBuilder(); int b = readByte(); while(isPrintableChar(b)) { sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } public long nextLong() { if (!hasNext()) throw new NoSuchElementException(); long n = 0; boolean minus = false; int b = readByte(); if (b == '-') { minus = true; b = readByte(); } if (b < '0' || '9' < b) { throw new NumberFormatException(); } while(true){ if ('0' <= b && b <= '9') { n *= 10; n += b - '0'; }else if(b == -1 || !isPrintableChar(b)){ return minus ? -n : n; }else{ throw new NumberFormatException(); } b = readByte(); } } public int nextInt() { long nl = nextLong(); if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException(); return (int) nl; } public double nextDouble() { return Double.parseDouble(next());} }