結果
問題 | No.871 かえるのうた |
ユーザー | uwi |
提出日時 | 2019-08-30 21:23:35 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 199 ms / 2,000 ms |
コード長 | 6,447 bytes |
コンパイル時間 | 5,039 ms |
コンパイル使用メモリ | 87,064 KB |
実行使用メモリ | 43,204 KB |
最終ジャッジ日時 | 2024-11-30 10:43:46 |
合計ジャッジ時間 | 10,196 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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 | 53 ms
36,760 KB |
testcase_01 | AC | 54 ms
36,948 KB |
testcase_02 | AC | 52 ms
36,596 KB |
testcase_03 | AC | 52 ms
37,024 KB |
testcase_04 | AC | 52 ms
36,852 KB |
testcase_05 | AC | 53 ms
36,844 KB |
testcase_06 | AC | 52 ms
37,004 KB |
testcase_07 | AC | 53 ms
36,880 KB |
testcase_08 | AC | 55 ms
37,068 KB |
testcase_09 | AC | 58 ms
36,840 KB |
testcase_10 | AC | 56 ms
37,148 KB |
testcase_11 | AC | 55 ms
36,864 KB |
testcase_12 | AC | 84 ms
38,500 KB |
testcase_13 | AC | 61 ms
37,048 KB |
testcase_14 | AC | 128 ms
40,476 KB |
testcase_15 | AC | 127 ms
40,172 KB |
testcase_16 | AC | 199 ms
43,204 KB |
testcase_17 | AC | 135 ms
40,160 KB |
testcase_18 | AC | 77 ms
38,516 KB |
testcase_19 | AC | 145 ms
40,304 KB |
testcase_20 | AC | 91 ms
38,424 KB |
testcase_21 | AC | 121 ms
39,656 KB |
testcase_22 | AC | 52 ms
37,152 KB |
testcase_23 | AC | 53 ms
37,064 KB |
testcase_24 | AC | 53 ms
36,896 KB |
testcase_25 | AC | 61 ms
36,888 KB |
testcase_26 | AC | 84 ms
38,716 KB |
testcase_27 | AC | 77 ms
37,724 KB |
testcase_28 | AC | 55 ms
36,916 KB |
testcase_29 | AC | 99 ms
39,436 KB |
testcase_30 | AC | 163 ms
41,408 KB |
testcase_31 | AC | 58 ms
36,912 KB |
testcase_32 | AC | 147 ms
42,568 KB |
testcase_33 | AC | 138 ms
40,772 KB |
testcase_34 | AC | 88 ms
38,380 KB |
testcase_35 | AC | 114 ms
39,624 KB |
testcase_36 | AC | 122 ms
40,148 KB |
testcase_37 | AC | 120 ms
40,184 KB |
testcase_38 | AC | 182 ms
41,800 KB |
testcase_39 | AC | 175 ms
41,324 KB |
testcase_40 | AC | 135 ms
42,580 KB |
testcase_41 | AC | 52 ms
36,940 KB |
testcase_42 | AC | 147 ms
42,020 KB |
testcase_43 | AC | 52 ms
37,064 KB |
testcase_44 | AC | 52 ms
36,980 KB |
testcase_45 | AC | 56 ms
37,068 KB |
testcase_46 | AC | 52 ms
37,152 KB |
testcase_47 | AC | 54 ms
37,064 KB |
testcase_48 | AC | 53 ms
36,820 KB |
ソースコード
package contest190830;import java.io.ByteArrayInputStream;import java.io.IOException;import java.io.InputStream;import java.io.PrintWriter;import java.util.ArrayDeque;import java.util.ArrayList;import java.util.Arrays;import java.util.InputMismatchException;import java.util.List;import java.util.Queue;public class B {InputStream is;PrintWriter out;String INPUT = "";void solve(){int n = ni();int K = ni()-1;long[] x = new long[n];for(int i= 0;i < n;i++) {x[i] = nl();}long[] a = new long[n];for(int i= 0;i < n;i++) {a[i] = nl();}LST lst = new LST(n);lst.setRange(n);Queue<Integer> q = new ArrayDeque<>();q.add(K);lst.unset(K);int g = 1;while(!q.isEmpty()) {int cur = q.poll();while(true) {int prev = lst.prev(cur);if(prev == -1)break;if(x[cur] - x[prev] <= a[cur]) {lst.unset(prev);q.add(prev);g++;}else {break;}}while(true) {int next = lst.next(cur);if(next == -1)break;if(x[next] - x[cur] <= a[cur]) {lst.unset(next);q.add(next);g++;}else {break;}}}out.println(g);}public static class LST {public long[][] set;public int n;// public int size;public LST(int n) {this.n = n;int d = 1;for(int m = n;m > 1;m>>>=6, d++);set = new long[d][];for(int i = 0, m = n>>>6;i < d;i++, m>>>=6){set[i] = new long[m+1];}// size = 0;}// [0,r)public LST setRange(int r){for(int i = 0;i < set.length;i++, r=r+63>>>6){for(int j = 0;j < r>>>6;j++){set[i][j] = -1L;}if((r&63) != 0)set[i][r>>>6] |= (1L<<r)-1;}return this;}// [0,r)public LST unsetRange(int r){if(r >= 0){for(int i = 0;i < set.length;i++, r=r+63>>>6){for(int j = 0;j < r+63>>>6;j++){set[i][j] = 0;}if((r&63) != 0)set[i][r>>>6] &= ~((1L<<r)-1);}}return this;}public LST set(int pos){if(pos >= 0 && pos < n){// if(!get(pos))size++;for(int i = 0;i < set.length;i++, pos>>>=6){set[i][pos>>>6] |= 1L<<pos;}}return this;}public LST unset(int pos){if(pos >= 0 && pos < n){// if(get(pos))size--;for(int i = 0;i < set.length && (i == 0 || set[i-1][pos] == 0L);i++, pos>>>=6){set[i][pos>>>6] &= ~(1L<<pos);}}return this;}public boolean get(int pos){return pos >= 0 && pos < n && set[0][pos>>>6]<<~pos<0;}public LST toggle(int pos){return get(pos) ? unset(pos) : set(pos);}public int prev(int pos){for(int i = 0;i < set.length && pos >= 0;i++, pos>>>=6, pos--){int pre = prev(set[i][pos>>>6], pos&63);if(pre != -1){pos = pos>>>6<<6|pre;while(i > 0)pos = pos<<6|63-Long.numberOfLeadingZeros(set[--i][pos]);return pos;}}return -1;}public int next(int pos){for(int i = 0;i < set.length && pos>>>6 < set[i].length;i++, pos>>>=6, pos++){int nex = next(set[i][pos>>>6], pos&63);if(nex != -1){pos = pos>>>6<<6|nex;while(i > 0)pos = pos<<6|Long.numberOfTrailingZeros(set[--i][pos]);return pos;}}return -1;}private static int prev(long set, int n){long h = set<<~n;if(h == 0L)return -1;return -Long.numberOfLeadingZeros(h)+n;}private static int next(long set, int n){long h = set>>>n;if(h == 0L)return -1;return Long.numberOfTrailingZeros(h)+n;}@Overridepublic String toString(){List<Integer> list = new ArrayList<Integer>();for(int pos = next(0);pos != -1;pos = next(pos+1)){list.add(pos);}return list.toString();}}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 B().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)); }}