結果
問題 | No.1153 ねこちゃんゲーム |
ユーザー |
|
提出日時 | 2020-08-20 04:26:50 |
言語 | Java17 (openjdk 17.0.1) |
結果 |
AC
|
実行時間 | 549 ms / 2,500 ms |
コード長 | 5,416 bytes |
コンパイル時間 | 4,383 ms |
使用メモリ | 60,316 KB |
最終ジャッジ日時 | 2022-12-05 20:50:24 |
合計ジャッジ時間 | 33,150 ms |
ジャッジサーバーID (参考情報) |
judge14 / judge12 |
テストケース
テストケース表示入力 | 結果 | 実行時間 使用メモリ |
---|---|---|
testcase_00 | AC | 73 ms
35,532 KB |
testcase_01 | AC | 53 ms
34,152 KB |
testcase_02 | AC | 81 ms
35,600 KB |
testcase_03 | AC | 61 ms
34,476 KB |
testcase_04 | AC | 80 ms
35,764 KB |
testcase_05 | AC | 62 ms
34,688 KB |
testcase_06 | AC | 79 ms
35,652 KB |
testcase_07 | AC | 505 ms
60,316 KB |
testcase_08 | AC | 466 ms
54,840 KB |
testcase_09 | AC | 476 ms
55,540 KB |
testcase_10 | AC | 444 ms
54,872 KB |
testcase_11 | AC | 514 ms
55,764 KB |
testcase_12 | AC | 484 ms
55,952 KB |
testcase_13 | AC | 461 ms
54,696 KB |
testcase_14 | AC | 500 ms
56,100 KB |
testcase_15 | AC | 432 ms
55,216 KB |
testcase_16 | AC | 481 ms
56,240 KB |
testcase_17 | AC | 458 ms
56,084 KB |
testcase_18 | AC | 444 ms
54,764 KB |
testcase_19 | AC | 487 ms
55,712 KB |
testcase_20 | AC | 452 ms
54,920 KB |
testcase_21 | AC | 508 ms
55,872 KB |
testcase_22 | AC | 493 ms
55,908 KB |
testcase_23 | AC | 455 ms
54,692 KB |
testcase_24 | AC | 471 ms
55,776 KB |
testcase_25 | AC | 474 ms
55,100 KB |
testcase_26 | AC | 511 ms
55,832 KB |
testcase_27 | AC | 522 ms
55,616 KB |
testcase_28 | AC | 543 ms
57,252 KB |
testcase_29 | AC | 549 ms
57,944 KB |
testcase_30 | AC | 516 ms
54,484 KB |
testcase_31 | AC | 545 ms
58,088 KB |
testcase_32 | AC | 517 ms
57,828 KB |
testcase_33 | AC | 522 ms
59,152 KB |
testcase_34 | AC | 514 ms
57,676 KB |
testcase_35 | AC | 483 ms
56,688 KB |
testcase_36 | AC | 453 ms
57,540 KB |
testcase_37 | AC | 409 ms
55,172 KB |
testcase_38 | AC | 440 ms
57,104 KB |
testcase_39 | AC | 425 ms
58,156 KB |
testcase_40 | AC | 405 ms
56,844 KB |
testcase_41 | AC | 431 ms
58,076 KB |
ソースコード
package no1xxx; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.Arrays; import java.util.BitSet; import java.util.InputMismatchException; public class No1153 { InputStream is; PrintWriter out; String INPUT = ""; void solve() { int n = ni(), m = ni(); int[] a = na(m); 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[] nim = new int[n]; for(int i = n-1;i >= 0;i--){ int cur = ord[i]; BitSet bs = new BitSet(); for(int e : g[cur]){ if(par[cur] == e)continue; bs.set(nim[e]); } nim[cur] = bs.nextClearBit(0); } int[] fall = new int[n]; int[] rdp = new int[n]; for(int i = 0;i < n;i++){ int cur = ord[i]; int[] f = new int[g[cur].length + 2]; BitSet bs = new BitSet(); if(cur != 0 && fall[cur] < f.length){ f[fall[cur]]++; bs.set(fall[cur]); } for(int e : g[cur]){ if(par[cur] == e)continue; if(nim[e] < f.length)f[nim[e]]++; bs.set(nim[e]); } int c = bs.nextClearBit(0); rdp[cur] = c; for(int e : g[cur]){ if(par[cur] == e)continue; if(nim[e] < c && f[nim[e]] == 1){ fall[e] = nim[e]; }else{ fall[e] = c; } } } int x = 0; for(int v : a){ x ^= rdp[v-1]; } if(x == 0){ out.println("-1 -1"); }else{ int p = 0; for(int v : a){ if((rdp[v-1]^x) <= rdp[v-1]){ for(int e : g[v-1]){ if(par[v-1] == e)continue; if(nim[e] == (rdp[v-1]^x)){ out.println((p+1) + " " + (e+1)); return; } } out.println((p+1) + " " + (par[v-1]+1)); return; } p++; } assert false; } } 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 No1153().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)); } }