結果
| 問題 |
No.900 aδδitivee
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-04-06 18:26:03 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 405 ms / 2,000 ms |
| コード長 | 4,157 bytes |
| コンパイル時間 | 1,993 ms |
| コンパイル使用メモリ | 79,544 KB |
| 実行使用メモリ | 91,892 KB |
| 最終ジャッジ日時 | 2024-07-06 15:15:56 |
| 合計ジャッジ時間 | 11,993 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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;
}
long sum(int k) {
long ret=0;
for(++k;k>0;k-=k&-k) ret+=a[k];
return ret;
}
}
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(in[b])+bit1.sum(in[b])*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());}
}