結果
問題 | No.168 ものさし |
ユーザー | AreTrash |
提出日時 | 2016-09-26 05:15:19 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 826 ms / 2,000 ms |
コード長 | 3,720 bytes |
コンパイル時間 | 1,396 ms |
コンパイル使用メモリ | 119,884 KB |
実行使用メモリ | 20,224 KB |
最終ジャッジ日時 | 2024-06-06 15:06:25 |
合計ジャッジ時間 | 7,636 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
(要ログイン)
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 | 122 ms
19,712 KB |
testcase_01 | AC | 27 ms
19,328 KB |
testcase_02 | AC | 27 ms
19,328 KB |
testcase_03 | AC | 25 ms
19,200 KB |
testcase_04 | AC | 25 ms
19,456 KB |
testcase_05 | AC | 24 ms
19,072 KB |
testcase_06 | AC | 24 ms
19,072 KB |
testcase_07 | AC | 25 ms
19,072 KB |
testcase_08 | AC | 27 ms
19,456 KB |
testcase_09 | AC | 32 ms
19,456 KB |
testcase_10 | AC | 46 ms
19,328 KB |
testcase_11 | AC | 191 ms
19,456 KB |
testcase_12 | AC | 590 ms
19,968 KB |
testcase_13 | AC | 826 ms
20,224 KB |
testcase_14 | AC | 825 ms
19,840 KB |
testcase_15 | AC | 25 ms
18,944 KB |
testcase_16 | AC | 28 ms
19,456 KB |
testcase_17 | AC | 32 ms
19,328 KB |
testcase_18 | AC | 46 ms
19,200 KB |
testcase_19 | AC | 398 ms
20,224 KB |
testcase_20 | AC | 412 ms
19,840 KB |
testcase_21 | AC | 412 ms
19,968 KB |
testcase_22 | AC | 413 ms
20,224 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.Linq; namespace No168{ public class Program{ public static void Main(string[] args){ var sr = new StreamReader(); //--------------------------------- var N = sr.Next<int>(); var P = sr.Next<long>(N, 2).Select(a => new{X = a[0], Y = a[1]}).ToArray(); Func<long, long, long, long, long> squareDist = (x1, y1, x2, y2) => (x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2); Func<int, int> check = x =>{ var uf = new UnionFind(N); for(var i = 0; i < N; i++){ for(var j = i + 1; j < N; j++){ if(squareDist(P[i].X, P[i].Y, P[j].X, P[j].Y) <= 100L * x * x) uf.Unite(i, j); } } return uf.IsSameSet(0, N - 1) ? 2 : 0; }; Console.WriteLine(~Ex.BinarySearch(check, 1, 0, 150000000) * 10); //--------------------------------- } } public class Ex{ //発見した場合は f(ret) == key //発見できなかった場合は f(ret - 1) < ~key < f(ret) public static int BinarySearch(Func<int, int> f, int key, int left, int right){ while(left != right){ var mid = (left + right) / 2; if(f(mid) == key) return mid; if(f(mid) > key) right = mid; if(f(mid) < key) left = mid + 1; } return ~left; } } public class UnionFind{ private readonly int[] _rank; private readonly int[] _p; public UnionFind(int size){ _rank = new int[size]; _p = new int[size]; for(var i = 0; i < size; i++){ _rank[i] = 0; _p[i] = i; } } public void Unite(int x, int y){ x = FindSet(x); y = FindSet(y); if(_rank[x] > _rank[y]) _p[y] = x; if(_rank[x] < _rank[y]) _p[x] = y; if(_rank[x] == _rank[y]){ _p[x] = y; _rank[y]++; } } public bool IsSameSet(int x, int y){ return FindSet(x) == FindSet(y); } public int FindSet(int x){ if(_p[x] == x) return x; return _p[x] = FindSet(_p[x]); } } public class StreamReader{ private readonly char[] _c = {' '}; private int _index = -1; private string[] _input = new string[0]; private readonly System.IO.StreamReader _sr = new System.IO.StreamReader(Console.OpenStandardInput()); public T Next<T>(){ if(_index == _input.Length - 1){ _index = -1; while(true){ string rl = _sr.ReadLine(); if(rl == null){ if(typeof(T).IsClass) return default(T); return (T)typeof(T).GetField("MinValue").GetValue(null); } if(rl != ""){ _input = rl.Split(_c, StringSplitOptions.RemoveEmptyEntries); break; } } } return (T)Convert.ChangeType(_input[++_index], typeof(T), System.Globalization.CultureInfo.InvariantCulture); } public T[] Next<T>(int x){ var ret = new T[x]; for(var i = 0; i < x; ++i) ret[i] = Next<T>(); return ret; } public T[][] Next<T>(int y, int x){ var ret = new T[y][]; for(var i = 0; i < y; ++i) ret[i] = Next<T>(x); return ret; } } }