結果
| 問題 |
No.335 門松宝くじ
|
| コンテスト | |
| ユーザー |
eitaho
|
| 提出日時 | 2016-03-22 03:35:27 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
AC
|
| 実行時間 | 1,401 ms / 2,000 ms |
| コード長 | 6,593 bytes |
| コンパイル時間 | 883 ms |
| コンパイル使用メモリ | 111,104 KB |
| 実行使用メモリ | 24,064 KB |
| 最終ジャッジ日時 | 2024-10-01 12:42:24 |
| 合計ジャッジ時間 | 11,350 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 10 |
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.IO;
using System.Linq;
using System.Text;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using Enu = System.Linq.Enumerable;
class Program
{
public void Solve()
{
int N = Reader.Int(), M = Reader.Int();
var table = Reader.IntTable(M);
double maxEx = -1;
int bestIndex = 0;
for (int i = 0; i < M; i++)
{
int ex = 0;
var seg = new MinMaxSegTree(N);
var V = table[i];
for (int x = 0; x < N; x++)
seg.Set(x, V[x]);
for (int a = 0; a < N; a++)
for (int b = a + 1; b < N; b++)
{
int val = 0;
Action<int, int, int> Check = (x, y, z) =>
{
int max = Math.Max(x, Math.Max(y, z));
if (max == y) { CheckMax(ref val, max); return; }
int min = Math.Min(x, Math.Min(y, z));
if (min == y) CheckMax(ref val, max);
};
if (a > 0)
{
Check(seg.Min(0, a), V[a], V[b]);
Check(seg.Max(0, a), V[a], V[b]);
}
if (a + 1 < b)
{
Check(V[a], seg.Min(a + 1, b), V[b]);
Check(V[a], seg.Max(a + 1, b), V[b]);
}
if (b + 1 < N)
{
Check(V[a], V[b], seg.Min(b + 1, N));
Check(V[a], V[b], seg.Max(b + 1, N));
}
//if (V[a] < V[b])
//{
// int val = 0;
// // c > a < b
// if (seg.Max(0, a) > V[a]) val = Math.Max(seg.Max(0, a), V[b]);
// // a > c < b
// if (seg.Min(a + 1, b) < V[a]) CheckMax(ref val, V[b]);
// // a < c > b
// if (seg.Max(a + 1, b) > V[b]) CheckMax(ref val, seg.Max(a + 1, b));
// // a < b > c
// if (seg.Min(b + 1, N) < V[b]) CheckMax(ref val, V[b]);
// ex += val;
//}
//else
//{
// // a > b
// int val = 0;
// // c < a > b
// if (seg.Min(0, a) < V[a]) val = V[a];
// // a > c < b
// if (seg.Min(a + 1, b) < V[b]) CheckMax(ref val, V[a]);
// // a < c > b
// if (seg.Max(a + 1, b) > V[a]) CheckMax(ref val, seg.Max(a + 1, b));
// // a > b < c
// if (seg.Max(b + 1, N) > V[b]) CheckMax(ref val, Math.Max(V[a], seg.Max(b + 1, N)));
// ex += val;
//}
ex += val;
}
if (ex > maxEx)
{
maxEx = ex;
bestIndex = i;
}
}
Console.WriteLine(bestIndex);
}
static void CheckMax(ref int a, int b) { if (b > a) a = b; }
class MinMaxSegTree
{
private static readonly int INF = (int)1e9;
public readonly int N;
private readonly int[] min, max;
public MinMaxSegTree(int n)
{
for (N = 4; N < n; ) N *= 2;
min = new int[N * 2];
max = new int[N * 2];
for (int i = 0; i < N; i++) { min[i] = INF; max[i] = -INF; }
}
public void Set(int index, int val)
{
index += N - 1;
min[index] = val;
max[index] = val;
while (index > 0)
{
index = (index - 1) / 2;
min[index] = Math.Min(min[index * 2 + 1], min[index * 2 + 2]);
max[index] = Math.Max(max[index * 2 + 1], max[index * 2 + 2]);
}
}
// [L, R)
public int Min(int L, int R) { return Rec(0, 0, N, L, R, Math.Min, min, INF); }
public int Max(int L, int R) { return Rec(0, 0, N, L, R, Math.Max, max, -INF); }
private int Rec(int index, int currL, int currR, int L, int R,
Func<int, int, int> f, int[] a, int defaultVal)
{
if (currL >= R || currR <= L) return defaultVal;
if (currL >= L && currR <= R) return a[index];
int mid = (currL + currR) / 2;
int vl = Rec(index * 2 + 1, currL, mid, L, R, f, a, defaultVal);
int vr = Rec(index * 2 + 2, mid, currR, L, R, f, a, defaultVal);
return f(vl, vr);
}
}
}
class Entry { static void Main() { new Program().Solve(); } }
class Reader
{
private static TextReader reader = Console.In;
private static readonly char[] separator = { ' ' };
private static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries;
private static string[] A = new string[0];
private static int i;
private static void Init() { A = new string[0]; }
public static void Set(TextReader r) { reader = r; Init(); }
public static void Set(string file) { reader = new StreamReader(file); Init(); }
public static bool HasNext() { return CheckNext(); }
public static string String() { return Next(); }
public static int Int() { return int.Parse(Next()); }
public static long Long() { return long.Parse(Next()); }
public static double Double() { return double.Parse(Next()); }
public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); }
public static int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); }
public static int[][] IntTable(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); }
public static string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Next()).ToArray(); }
public static string Line() { return reader.ReadLine().Trim(); }
private static string[] Split(string s) { return s.Split(separator, op); }
private static string Next() { CheckNext(); return A[i++]; }
private static bool CheckNext()
{
if (i < A.Length) return true;
string line = reader.ReadLine();
if (line == null) return false;
if (line == "") return CheckNext();
A = Split(line);
i = 0;
return true;
}
}
eitaho