結果
問題 | No.875 Range Mindex Query |
ユーザー | iwkjosec |
提出日時 | 2019-10-05 17:28:44 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 127 ms / 2,000 ms |
コード長 | 4,063 bytes |
コンパイル時間 | 1,087 ms |
コンパイル使用メモリ | 115,688 KB |
実行使用メモリ | 22,144 KB |
最終ジャッジ日時 | 2024-10-06 11:38:00 |
合計ジャッジ時間 | 3,478 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | 22 ms
17,408 KB |
testcase_01 | AC | 23 ms
17,664 KB |
testcase_02 | AC | 23 ms
17,536 KB |
testcase_03 | AC | 22 ms
17,280 KB |
testcase_04 | AC | 22 ms
17,536 KB |
testcase_05 | AC | 21 ms
17,536 KB |
testcase_06 | AC | 21 ms
17,408 KB |
testcase_07 | AC | 21 ms
17,408 KB |
testcase_08 | AC | 22 ms
17,536 KB |
testcase_09 | AC | 23 ms
17,280 KB |
testcase_10 | AC | 23 ms
17,280 KB |
testcase_11 | AC | 127 ms
20,224 KB |
testcase_12 | AC | 109 ms
19,200 KB |
testcase_13 | AC | 93 ms
19,584 KB |
testcase_14 | AC | 88 ms
19,584 KB |
testcase_15 | AC | 115 ms
20,352 KB |
testcase_16 | AC | 110 ms
21,632 KB |
testcase_17 | AC | 121 ms
22,144 KB |
testcase_18 | AC | 118 ms
22,016 KB |
コンパイルメッセージ
Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc) Copyright (C) Microsoft Corporation. All rights reserved.
ソースコード
using System; using System.Collections.Generic; using System.Linq; using static System.Console; using static System.Math; using Pair = System.Collections.Generic.KeyValuePair<int, int>; class Program { static void Main() { SetOut(new System.IO.StreamWriter(OpenStandardOutput()) { AutoFlush = false }); var sc = new StreamScanner(OpenStandardInput()); var N = sc.Int(); var Q = sc.Int(); var a=new Pair[N]; for (int i = 0; i < a.Length; i++) { a[i]=new Pair(i+1,sc.Int()); } var s = new SegmentTree<Pair>(a, Mindex, new Pair(0, int.MaxValue)); for (int i = 0; i < Q; i++) { var q = sc.Int(); var l = sc.Int() - 1; var r = sc.Int() + (q == 1 ? -1 : 0); if (q == 1) { var k = s[l].Value; s[l] = new Pair(l + 1, s[r].Value); s[r] = new Pair(r + 1, k); } else { WriteLine(s.Query(l, r).Key); } } Out.Flush(); } static Pair Mindex(Pair l, Pair r) => l.Value < r.Value ? l : r; } public class SegmentTree<T> { T[] buffer;//0-index int N; public int Length => N; T TI; Func<T, T, T> F;//デリゲート遅そう public SegmentTree(int length, Func<T, T, T> f, T ti)//モノイドが直接渡せれば C#9.0ではいるか { N = length; buffer = new T[N * 2 - 1]; for (int i = 0; i < buffer.Length; i++) buffer[i] = ti; //! F = f; TI = ti; } public SegmentTree(T[] init, Func<T, T, T> f, T ti) { N = init.Length; buffer = new T[N * 2 - 1]; Array.Copy(init, 0, buffer, N - 1, init.Length); for (int i = N - 2; i >= 0; i--) { buffer[i] = f(buffer[i * 2 + 1], buffer[i * 2 + 2]); } F = f; TI = ti; } public void Update(int k, T v)//k [0, N) { k += N - 1; buffer[k] = v; while (k > 0) { k = (k - 1) >> 1; buffer[k] = F(buffer[k * 2 + 1], buffer[k * 2 + 2]); } } public T this[int k] { set//setの式形式はC#7.0以降 { Update(k, value); } get { return buffer[k + N - 1]; } } public T Query(int l, int r)//[l, r) 0 <= l, r <= N // 0 <= r - l のとき空区間 { var lv = TI; var rv = TI; l += N - 1; r += N - 1; while (l < r) { if ((l & 1) == 0) { lv = F(lv, buffer[l]); } if ((r & 1) == 0) { rv = F(buffer[r - 1], rv); } l >>= 1; r = (r - 1) >> 1; } return F(lv, rv); } } public class StreamScanner { public StreamScanner(System.IO.Stream stream) { str = stream; } public readonly System.IO.Stream str; private readonly byte[] buf = new byte[1024]; private int len, ptr; public bool isEof; public bool IsEndOfStream { get { return isEof; } } private byte read() { if (isEof) return 0; if (ptr < len) return buf[ptr++]; ptr = 0; if ((len = str.Read(buf, 0, 1024)) > 0) return buf[ptr++]; isEof = true; return 0; } public long Long() { if (isEof) return long.MinValue; long ret = 0; byte b; var ng = false; do b = read(); while (b != 0 && b != '-' && (b < '0' || '9' < b)); if (b == 0) return long.MinValue; if (b == '-') { ng = true; b = read(); } for (; ; b = read()) { if (b < '0' || '9' < b) return ng ? -ret : ret; ret = ret * 10 + b - '0'; } } public int Int() { return (isEof) ? int.MinValue : (int)Long(); } }