結果
| 問題 |
No.2248 max(C)-min(C)
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2023-03-17 22:37:48 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
AC
|
| 実行時間 | 863 ms / 3,000 ms |
| コード長 | 3,813 bytes |
| コンパイル時間 | 6,211 ms |
| コンパイル使用メモリ | 111,796 KB |
| 実行使用メモリ | 62,852 KB |
| 最終ジャッジ日時 | 2024-09-18 11:44:10 |
| 合計ジャッジ時間 | 32,150 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 * 3 |
| other | AC * 51 |
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 static System.Console;
using System.Linq;
using System.Collections.Generic;
class Program
{
static int NN => int.Parse(ReadLine());
static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
static int[] NMi => ReadLine().Split().Select(c => int.Parse(c) - 1).ToArray();
static int[][] NMap(int n) => Enumerable.Repeat(0, n).Select(_ => NMi).ToArray();
public static void Main()
{
Solve();
}
static void Solve()
{
var n = NN;
var a = NList;
var b = NList;
var s = new int[n];
var m = new int[n];
var l = new int[n];
for (var i = 0; i < n; ++i)
{
s[i] = Math.Min(a[i], b[i]);
m[i] = (a[i] + b[i]) / 2;
l[i] = Math.Max(a[i], b[i]);
}
var q = new PriorityQueue<Pair>(n, false);
var max = 0;
for (var i = 0; i < n; ++i)
{
q.Enqueue(new Pair(i, 0, s[i]));
max = Math.Max(max, s[i]);
}
var ans = l.Max() - l.Min();
var lmin = int.MaxValue;
while (q.Count > 0)
{
ans = Math.Min(ans, max - Math.Min(q.List[0].Val, lmin));
var cur = q.Dequeue();
if (cur.Kind == 0)
{
q.Enqueue(new Pair(cur.Pos, 1, m[cur.Pos]));
max = Math.Max(max, m[cur.Pos]);
}
else if (cur.Kind == 1)
{
max = Math.Max(max, l[cur.Pos]);
lmin = Math.Min(lmin, l[cur.Pos]);
}
}
WriteLine(ans);
}
class Pair : IComparable<Pair>
{
public int Pos;
public int Kind;
public int Val;
public Pair(int pos, int kind, int val)
{
Pos = pos; Kind = kind; Val = val;
}
public int CompareTo(Pair b)
{
return Val.CompareTo(b.Val);
}
}
class PriorityQueue<T> where T : IComparable<T>
{
public T[] List;
public int Count;
bool IsTopMax;
public PriorityQueue(int count, bool isTopMax)
{
IsTopMax = isTopMax;
List = new T[Math.Max(128, count)];
}
public void Enqueue(T value)
{
if (Count == List.Length)
{
var newlist = new T[List.Length * 2];
for (var i = 0; i < List.Length; ++i) newlist[i] = List[i];
List = newlist;
}
var pos = Count;
List[pos] = value;
++Count;
while (pos > 0)
{
var parent = (pos - 1) / 2;
if (Calc(List[parent], List[pos], true)) break;
Swap(parent, pos);
pos = parent;
}
}
public T Dequeue()
{
--Count;
Swap(0, Count);
var pos = 0;
while (true)
{
var child = pos * 2 + 1;
if (child >= Count) break;
if (child + 1 < Count && Calc(List[child + 1], List[child], false)) ++child;
if (Calc(List[pos], List[child], true)) break;
Swap(pos, child);
pos = child;
}
return List[Count];
}
bool Calc(T a, T b, bool equalVal)
{
var ret = a.CompareTo(b);
if (ret == 0 && equalVal) return true;
return IsTopMax ? ret > 0 : ret < 0;
}
void Swap(int a, int b)
{
var tmp = List[a];
List[a] = List[b];
List[b] = tmp;
}
}
}