結果
| 問題 | No.1038 TreeAddQuery |
| ユーザー |
 uwi
|
| 提出日時 | 2020-06-25 04:36:20 |
| 言語 | Java21 (openjdk 21) |
| 結果 |
MLE
|
| 実行時間 | - |
| コード長 | 13,622 bytes |
| コンパイル時間 | 4,645 ms |
| コンパイル使用メモリ | 89,948 KB |
| 実行使用メモリ | 746,632 KB |
| 最終ジャッジ日時 | 2024-07-03 20:35:13 |
| 合計ジャッジ時間 | 37,564 ms |
|
ジャッジサーバーID （参考情報） |
judge1 / judge5 |
（要ログイン）
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 | 52 ms
50,256 KB |
| testcase_01 | AC | 53 ms
50,336 KB |
| testcase_02 | AC | 53 ms
50,064 KB |
| testcase_03 | AC | 129 ms
53,224 KB |
| testcase_04 | AC | 136 ms
53,408 KB |
| testcase_05 | AC | 128 ms
53,308 KB |
| testcase_06 | AC | 125 ms
53,308 KB |
| testcase_07 | AC | 137 ms
53,440 KB |
| testcase_08 | AC | 1,470 ms
119,020 KB |
| testcase_09 | AC | 1,522 ms
116,724 KB |
| testcase_10 | AC | 1,712 ms
123,380 KB |
| testcase_11 | AC | 1,577 ms
119,856 KB |
| testcase_12 | AC | 1,705 ms
119,384 KB |
| testcase_13 | AC | 1,808 ms
124,200 KB |
| testcase_14 | AC | 1,680 ms
115,664 KB |
| testcase_15 | AC | 1,827 ms
117,088 KB |
| testcase_16 | AC | 1,511 ms
114,016 KB |
| testcase_17 | AC | 1,620 ms
114,412 KB |
| testcase_18 | AC | 751 ms
112,908 KB |
| testcase_19 | AC | 779 ms
101,796 KB |
| testcase_20 | AC | 852 ms
95,512 KB |
| testcase_21 | AC | 925 ms
108,484 KB |
| testcase_22 | AC | 993 ms
97,732 KB |
| testcase_23 | AC | 1,068 ms
115,352 KB |
| testcase_24 | AC | 1,496 ms
117,288 KB |
| testcase_25 | AC | 1,900 ms
124,016 KB |
| testcase_26 | MLE | - |
ソースコード
package contest200424;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.InputMismatchException;
// 重心分解する
// add: 重心木のxの先祖のノードsに対して、y-d(x,s)の位置にzを加算。下の除く処理のために各ネックでも加算
// sum: 重心木のxの先祖のノードsに対して、d(x,s)以上の位置の値の合計を計算。ただしsのx側のネックは除く
//
public class F2 {
InputStream is;
PrintWriter out;
String INPUT = "";
void solve()
{
int n = ni(), Q = ni();
int[] from = new int[n - 1];
int[] to = new int[n - 1];
for (int i = 0; i < n - 1; i++) {
from[i] = ni() - 1;
to[i] = ni() - 1;
}
int[][] g = packU(n, from, to);
int[][] pars = parents3(g, 0);
int[] par = pars[0], ord = pars[1], dep = pars[2];
int[] cpar = buildCentroidTree(g);
maxds = new int[n];
ctneck = new int[n];
Context cx = dfsTopCT(cpar, g);
long[][] plus = new long[n][];
long[] plusall = new long[n];
for(int i = 0;i < n;i++){
plus[i] = new long[maxds[i]+1+3];
}
long[][][] minus = new long[n][][];
long[][] minusall = new long[n][];
for(int i = 0;i < n;i++){
minus[i] = new long[ctneck[i]][maxds[i]+1+3];
minusall[i] = new long[ctneck[i]];
}
HeavyLightDecomposition hld = new HeavyLightDecomposition(g, par, ord, dep);
for(int z = 0;z < Q;z++){
int x = ni()-1, D = ni(), Z = ni();
long val = 0;
for(int u = x;u != -1;u = cpar[u]){
int d = d(u, x, hld, dep);
// tr(x, D, Z, u, d);
// tr(plusall[u], restoreFenwick(plus[u]));
val += plusall[u] - sumFenwick(plus[u], d-1);
// tr(val);
if(d <= D){
addFenwick(plus[u], Math.min(maxds[u], D-d), Z);
plusall[u] += Z;
}
int neckind = cx.neckind[u];
int pu = cpar[u];
if(pu != -1){
int pd = d(pu, x, hld, dep);
val -= minusall[pu][neckind] - sumFenwick(minus[pu][neckind], Math.min(pd-1, maxds[pu]));
if(D-pd >= 0){
addFenwick(minus[pu][neckind], Math.min(maxds[pu], D-pd), Z);
minusall[pu][neckind] += Z;
}
}
}
out.println(val);
}
}
public static long[] restoreFenwick(long[] ft)
{
int n = ft.length-1;
long[] ret = new long[n];
for(int i = 0;i < n;i++)ret[i] = sumFenwick(ft, i);
for(int i = n-1;i >= 1;i--)ret[i] -= ret[i-1];
return ret;
}
public static long sumFenwick(long[] ft, int i)
{
long sum = 0;
for(i++;i > 0;i -= i&-i)sum += ft[i];
return sum;
}
public static void addFenwick(long[] ft, int l, int r, long v)
{
addFenwick(ft, l, v);
addFenwick(ft, r, -v);
}
public static void addFenwick(long[] ft, int i, long v)
{
if(v == 0)return;
int n = ft.length;
for(i++;i < n;i += i&-i)ft[i] += v;
}
static int d(int x, int y, HeavyLightDecomposition hld, int[] dep)
{
int lca = hld.lca(x, y);
return dep[x] + dep[y] - 2*dep[lca];
}
public static int[] buildCentroidTree(int[][] g) {
int n = g.length;
int[] ctpar = new int[n];
Arrays.fill(ctpar, -1);
buildCentroidTree(g, 0, new boolean[n], new int[n], new int[n], new int[n], ctpar);
return ctpar;
}
private static int buildCentroidTree(int[][] g, int root, boolean[] sed, int[] par, int[] ord, int[] des, int[] ctpar)
{
// parent and level-order
ord[0] = root;
par[root] = -1;
int r = 1;
for(int p = 0;p < r;p++) {
int cur = ord[p];
for(int nex : g[cur]){
if(par[cur] != nex && !sed[nex]){
ord[r++] = nex;
par[nex] = cur;
}
}
}
// if(r == 1)return;
// DP and find a separator
int sep = -1; // always exists
outer:
for(int i = r-1;i >= 0;i--){
int cur = ord[i];
des[cur] = 1;
for(int e : g[cur]){
if(par[cur] != e && !sed[e])des[cur] += des[e];
}
if(r-des[cur] <= r/2){
for(int e : g[cur]){
if(par[cur] != e && !sed[e] && des[e] >= r/2+1)continue outer;
}
sep = cur;
break;
}
}
sed[sep] = true;
for(int e : g[sep]){
if(!sed[e])ctpar[buildCentroidTree(g, e, sed, par, ord, des, ctpar)] = sep;
}
return sep;
}
/**
* w: 頂点重み
* wt: weight table. wt[i] = (頂点iのsepからの重み合計。sepは含まない)
* dt: distance table. dt[i] = (頂点iのsepからの距離)
* vs: vertices. vssのテンポラリ
* vss: vertices. vss[j] = (j番目のneckにある頂点のpreorder)
* ctch: children of centroid tree
* stack, inds: テンポラリ
* @author uwi
*
*/
static class Context
{
boolean[] seps; // is separator?
long[] wt; // [ind] = w between sep and ind
int[] dt;
int[] vs;
int[][] vss; // [neckind][vertices]
int[][] ctch;
int[][] g;
int[] stack;
int[] inds;
int[] neckind;
int[] cpar;
}
int[] maxds;
int[] ctneck;
public Context dfsTopCT(int[] cpar, int[][] g) {
int n = g.length;
int ctroot = -1;
for(int i = 0;i < n;i++)if(cpar[i] == -1)ctroot = i;
Context cx = new Context();
cx.cpar = cpar;
cx.seps = new boolean[n];
cx.wt = new long[n];
cx.dt = new int[n];
cx.vs = new int[n];
cx.vss = new int[n][];
cx.ctch = parentToChildren(cpar);
cx.g = g;
cx.stack = new int[n];
cx.inds = new int[n];
cx.neckind = new int[n];
dfs(ctroot, cx);
return cx;
}
private void dfs(int sep, Context cx)
{
cx.seps[sep] = true;
int neckp = 0;
for(int neck : cx.g[sep]){
if(cx.seps[neck])continue;
int sp = 0;
cx.inds[sp] = 0;
// cx.wt[neck] = w[neck];
cx.dt[neck] = 1;
int vsp = 0;
cx.stack[sp++] = neck;
while(sp > 0){
int cur = cx.stack[sp-1];
if(cx.inds[sp-1] == 0){
cx.vs[vsp++] = cur;
if(cx.cpar[cur] == sep)cx.neckind[cur] = neckp;
}
if(cx.inds[sp-1] == cx.g[cur].length){
sp--;
continue;
}
int e = cx.g[cur][cx.inds[sp-1]++];
if(!cx.seps[e] && !(sp-2 >= 0 && e == cx.stack[sp-2])){
// cx.wt[e] = cx.wt[cur] + w[e];
cx.dt[e] = sp + 1;
cx.stack[sp] = e;
cx.inds[sp] = 0;
sp++;
}
}
cx.vss[neckp] = Arrays.copyOf(cx.vs, vsp);
neckp++;
}
ctneck[sep] = neckp;
process(sep, cx, Arrays.copyOf(cx.vss, neckp));
for(int e : cx.ctch[sep])dfs(e, cx);
}
public static int[][] parentToChildren(int[] par)
{
int n = par.length;
int[] ct = new int[n];
for(int i = 0;i < n;i++){
if(par[i] >= 0){
ct[par[i]]++;
}
}
int[][] g = new int[n][];
for(int i = 0;i < n;i++){
g[i] = new int[ct[i]];
}
for(int i = 0;i < n;i++){
if(par[i] >= 0){
g[par[i]][--ct[par[i]]] = i;
}
}
return g;
}
private void process(int sep, Context cx, int[][] vss)
{
for(int[] vs : vss){
for(int v : vs){
maxds[sep] = Math.max(maxds[sep], cx.dt[v]);
}
}
}
public static class HeavyLightDecomposition {
public int[][] g;
public int[] clus;
public int[][] cluspath;
public int[] clusiind;
public int[] par, dep;
public int m;
public HeavyLightDecomposition(int[][] g, int[] par, int[] ord, int[] dep)
{
init(g, par, ord, dep);
}
public void init(int[][] g, int[] par, int[] ord, int[] dep)
{
clus = decomposeToHeavyLight(g, par, ord);
cluspath = clusPaths(clus, ord);
clusiind = clusIInd(cluspath, g.length);
this.m = cluspath.length;
this.par = par;
this.dep = dep;
this.g = g;
}
public static int[] decomposeToHeavyLight(int[][] g, int[] par, int[] ord)
{
int n = g.length;
int[] size = new int[n];
Arrays.fill(size, 1);
for(int i = n-1;i > 0;i--)size[par[ord[i]]] += size[ord[i]];
int[] clus = new int[n];
Arrays.fill(clus, -1);
int p = 0;
for(int i = 0;i < n;i++){
int u = ord[i];
if(clus[u] == -1)clus[u] = p++;
// centroid path (not heavy path)
int argmax = -1;
for(int v : g[u]){
if(par[u] != v && (argmax == -1 || size[v] > size[argmax]))argmax = v;
}
if(argmax != -1)clus[argmax] = clus[u];
}
return clus;
}
public static int[][] clusPaths(int[] clus, int[] ord)
{
int n = clus.length;
int[] rp = new int[n];
int sup = 0;
for(int i = 0;i < n;i++){
rp[clus[i]]++;
sup = Math.max(sup, clus[i]);
}
sup++;
int[][] row = new int[sup][];
for(int i = 0;i < sup;i++)row[i] = new int[rp[i]];
for(int i = n-1;i >= 0;i--){
row[clus[ord[i]]][--rp[clus[ord[i]]]] = ord[i];
}
return row;
}
public static int[] clusIInd(int[][] clusPath, int n)
{
int[] iind = new int[n];
for(int[] path : clusPath){
for(int i = 0;i < path.length;i++){
iind[path[i]] = i;
}
}
return iind;
}
public int lca(int x, int y)
{
int rx = cluspath[clus[x]][0];
int ry = cluspath[clus[y]][0];
while(clus[x] != clus[y]){
if(dep[rx] > dep[ry]){
x = par[rx];
rx = cluspath[clus[x]][0];
}else{
y = par[ry];
ry = cluspath[clus[y]][0];
}
}
return clusiind[x] > clusiind[y] ? y : x;
}
public int ancestor(int x, int v)
{
while(x != -1){
if(v <= clusiind[x])return cluspath[clus[x]][clusiind[x]-v];
v -= clusiind[x]+1;
x = par[cluspath[clus[x]][0]];
}
return x;
}
// [iord[x], right[x])
public int[][] makeRights()
{
int root = -1;
int n = g.length;
for(int i = 0;i < n;i++)if(par[i] == -1)root = i;
int[] ord = new int[n];
int[] right = new int[n];
int[] curs = new int[n];
int[] inds = new int[n];
int sp = 0, p = 0;
curs[sp++] = root;
while(sp > 0){
int cur = curs[sp-1];
int ind = inds[sp-1];
inds[sp-1]++;
if(ind == 0){
ord[p++] = cur;
for(int e : g[cur]){
if(par[cur] == e)continue;
if(clus[cur] == clus[e]){
curs[sp] = e;
inds[sp] = 0;
sp++;
break;
}
}
}else if(ind-1 < g[cur].length){
int e = g[cur][ind-1];
if(e == par[cur])continue;
if(clus[cur] == clus[e])continue;
curs[sp] = e;
inds[sp] = 0;
sp++;
}else{
right[cur] = p;
sp--;
}
}
int[] iord = new int[n];
for(int i = 0;i < n;i++)iord[ord[i]] = i;
return new int[][]{ord, iord, right};
}
}
public static int[][] parents3(int[][] g, int root) {
int n = g.length;
int[] par = new int[n];
Arrays.fill(par, -1);
int[] depth = new int[n];
depth[0] = 0;
int[] q = new int[n];
q[0] = root;
for (int p = 0, r = 1; p < r; p++) {
int cur = q[p];
for (int nex : g[cur]) {
if (par[cur] != nex) {
q[r++] = nex;
par[nex] = cur;
depth[nex] = depth[cur] + 1;
}
}
}
return new int[][] { par, q, depth };
}
static int[][] packU(int n, int[] from, int[] to) {
int[][] g = new int[n][];
int[] p = new int[n];
for (int f : from)
p[f]++;
for (int t : to)
p[t]++;
for (int i = 0; i < n; i++)
g[i] = new int[p[i]];
for (int i = 0; i < from.length; i++) {
g[from[i]][--p[from[i]]] = to[i];
g[to[i]][--p[to[i]]] = from[i];
}
return g;
}
void run() throws Exception
{
is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
out = new PrintWriter(System.out);
long s = System.currentTimeMillis();
solve();
out.flush();
if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
// Thread t = new Thread(null, null, "~", Runtime.getRuntime().maxMemory()){
// @Override
// public void run() {
// long s = System.currentTimeMillis();
// solve();
// out.flush();
// if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
// }
// };
// t.start();
// t.join();
}
public static void main(String[] args) throws Exception { new F2().run(); }
private byte[] inbuf = new byte[1024];
public int lenbuf = 0, ptrbuf = 0;
private int readByte()
{
if(lenbuf == -1)throw new InputMismatchException();
if(ptrbuf >= lenbuf){
ptrbuf = 0;
try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); }
if(lenbuf <= 0)return -1;
}
return inbuf[ptrbuf++];
}
private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); }
private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; }
private double nd() { return Double.parseDouble(ns()); }
private char nc() { return (char)skip(); }
private String ns()
{
int b = skip();
StringBuilder sb = new StringBuilder();
while(!(isSpaceChar(b))){ // when nextLine, (isSpaceChar(b) && b != ' ')
sb.appendCodePoint(b);
b = readByte();
}
return sb.toString();
}
private char[] ns(int n)
{
char[] buf = new char[n];
int b = skip(), p = 0;
while(p < n && !(isSpaceChar(b))){
buf[p++] = (char)b;
b = readByte();
}
return n == p ? buf : Arrays.copyOf(buf, p);
}
private int[] na(int n)
{
int[] a = new int[n];
for(int i = 0;i < n;i++)a[i] = ni();
return a;
}
private long[] nal(int n)
{
long[] a = new long[n];
for(int i = 0;i < n;i++)a[i] = nl();
return a;
}
private char[][] nm(int n, int m) {
char[][] map = new char[n][];
for(int i = 0;i < n;i++)map[i] = ns(m);
return map;
}
private int[][] nmi(int n, int m) {
int[][] map = new int[n][];
for(int i = 0;i < n;i++)map[i] = na(m);
return map;
}
private int ni() { return (int)nl(); }
private long nl()
{
long num = 0;
int b;
boolean minus = false;
while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
if(b == '-'){
minus = true;
b = readByte();
}
while(true){
if(b >= '0' && b <= '9'){
num = num * 10 + (b - '0');
}else{
return minus ? -num : num;
}
b = readByte();
}
}
private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); }
}