結果
問題 |
No.777 再帰的ケーキ
|
ユーザー |
![]() |
提出日時 | 2023-06-16 13:27:26 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 1,196 ms / 2,000 ms |
コード長 | 2,704 bytes |
コンパイル時間 | 3,008 ms |
コンパイル使用メモリ | 89,180 KB |
実行使用メモリ | 80,708 KB |
最終ジャッジ日時 | 2024-06-24 07:14:05 |
合計ジャッジ時間 | 15,542 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 33 |
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(); Cake[] cakes = new Cake[n]; for (int i = 0; i < n; i++) { cakes[i] = new Cake(sc.nextInt(), sc.nextInt(), sc.nextInt()); } Arrays.sort(cakes); TreeMap<Integer, Long> ans = new TreeMap<>(); ans.put(Integer.MAX_VALUE, 0L); for (Cake x : cakes) { long next = ans.higherEntry(x.b).getValue() + x.value; if (ans.getOrDefault(x.b, 0L) >= next) { continue; } ans.put(x.b, next); Integer key = x.b; while ((key = ans.lowerKey(key)) != null) { if (ans.get(key) > next) { break; } ans.remove(key); } } System.out.println(ans.firstEntry().getValue()); } static class Cake implements Comparable<Cake> { int a; int b; int value; public Cake(int a, int b, int value) { this.a = a; this.b = b; this.value = value; } public int compareTo(Cake another) { if (a == another.a) { return b - another.b; } else { return another.a - a; } } } } 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(); } }