結果
| 問題 |
No.1170 Never Want to Walk
|
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2023-06-21 11:40:32 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 373 ms / 2,000 ms |
| コード長 | 3,626 bytes |
| コンパイル時間 | 4,126 ms |
| コンパイル使用メモリ | 89,916 KB |
| 実行使用メモリ | 66,684 KB |
| 最終ジャッジ日時 | 2024-06-28 21:17:49 |
| 合計ジャッジ時間 | 10,988 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 37 |
ソースコード
import java.io.*;
import java.util.*;
import java.util.stream.*;
public class Main {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner();
int n = sc.nextInt();
int a = sc.nextInt();
int b = sc.nextInt();
int[] points = new int[n];
for (int i = 0; i < n; i++) {
points[i] = sc.nextInt();
}
int left = 0;
int right = 0;
UnionFindTree uft = new UnionFindTree(n);
int[] imos = new int[n];
for (int i = 0; i < n; i++) {
while (left < n && points[left] - points[i] < a) {
left++;
}
if (left >= n) {
break;
}
while (right < n && points[right] - points[i] <= b) {
right++;
}
if (left == right) {
continue;
}
uft.unite(i, left);
imos[left]++;
imos[right - 1]--;
}
if (imos[0] > 0) {
uft.unite(0, 1);
}
for (int i = 1; i < n; i++) {
imos[i] += imos[i - 1];
if (imos[i] > 0) {
uft.unite(i, i + 1);
}
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < n; i++) {
sb.append(uft.getCount(i)).append("\n");
}
System.out.print(sb);
}
static class UnionFindTree {
int[] parents;
int[] counts;
public UnionFindTree(int size) {
parents = new int[size];
counts = new int[size];
for (int i = 0; i < size; i++) {
parents[i] = i;
counts[i] = 1;
}
}
public int find(int x) {
if (x == parents[x]) {
return x;
} else {
return parents[x] = find(parents[x]);
}
}
public boolean same(int x, int y) {
return find(x) == find(y);
}
public void unite(int x, int y) {
int xx = find(x);
int yy = find(y);
if (xx != yy) {
parents[xx] = yy;
counts[yy] += counts[xx];
}
}
public int getCount(int x) {
return counts[find(x)];
}
}
}
class Utilities {
static String arrayToLineString(Object[] arr) {
return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
}
static String arrayToLineString(int[] arr) {
return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
}
}
class Scanner {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer("");
StringBuilder sb = new StringBuilder();
public Scanner() throws Exception {
}
public int nextInt() throws Exception {
return Integer.parseInt(next());
}
public long nextLong() throws Exception {
return Long.parseLong(next());
}
public double nextDouble() throws Exception {
return Double.parseDouble(next());
}
public int[] nextIntArray() throws Exception {
return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
}
public String next() throws Exception {
while (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
return st.nextToken();
}
}
tenten