結果
問題 | No.5020 Averaging |
ユーザー |
|
提出日時 | 2024-02-25 15:46:51 |
言語 | C# (.NET 8.0.404) |
結果 |
AC
|
実行時間 | 108 ms / 1,000 ms |
コード長 | 5,162 bytes |
コンパイル時間 | 8,905 ms |
コンパイル使用メモリ | 158,240 KB |
実行使用メモリ | 183,212 KB |
スコア | 21,917,887 |
最終ジャッジ日時 | 2024-02-25 15:47:08 |
合計ジャッジ時間 | 15,184 ms |
ジャッジサーバーID (参考情報) |
judge13 / judge11 |
純コード判定しない問題か言語 |
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ファイルパターン | 結果 |
---|---|
other | AC * 50 |
コンパイルメッセージ
復元対象のプロジェクトを決定しています... /home/judge/data/code/main.csproj を復元しました (94 ms)。 MSBuild のバージョン 17.7.3+8ec440e68 (.NET) main -> /home/judge/data/code/bin/Release/net7.0/main.dll main -> /home/judge/data/code/bin/Release/net7.0/publish/
ソースコード
using System;using System.Reflection;// TODO: 1次元で考える// 3個あれば表現可能そうだけど// a < b < c// これだとどれかの2つが同じになって単調になりそう// a,b,c// a,(b+c)/2// (1/2,1/4,1/4) (0,1/2,1/2)// (1/2,1/4,1/4) (1/4,3/8,3/8)class Program{static void Main(){int n = ni();long[][] co = nml(n);long O = 500000000000000000L;List<int[]> ret = new List<int[]>();long lmin = O*2;int argmin = -1;for(int i = 0;i < n;i++){long x = (co[0][0] + co[i][0]) / 2;long y = (co[0][1] + co[i][1]) / 2;long d = Math.Abs(x - O) + Math.Abs(y - O);if(d < lmin){lmin = d;argmin = i;}}if(argmin > 0){long x = (co[0][0] + co[argmin][0]) / 2;long y = (co[0][1] + co[argmin][1]) / 2;co[0][0] = co[argmin][0] = x;co[0][1] = co[argmin][1] = y;ret.Add(new int[]{0, argmin});}long tx = O*2 - co[0][0];long ty = O*2 - co[0][1];long[][] sco = co.OrderBy(c => c[0]).ToArray();int p = 0, q = n-1;for(int i = 0;i < 4;i++){List<long[]> ls = new List<long[]>();for(int j = 0;j < 2;j++){if(sco[p][2] == 0)p++;ls.Add(sco[p++]);}for(int j = 0;j < 2;j++){if(sco[q][2] == 0)q--;ls.Add(sco[q--]);}double[] xs = new double[]{Convert.ToDouble(ls[0][0]) - tx,Convert.ToDouble(ls[1][0]) - tx,Convert.ToDouble(ls[2][0]) - tx,Convert.ToDouble(ls[3][0]) - tx};min = Double.PositiveInfinity;simulate(xs, 10, new List<int>());foreach(int ind in best){long x = (ls[ind][0] + ls[ind+1][0]) / 2;long y = (ls[ind][1] + ls[ind+1][1]) / 2;ret.Add(new int[]{Convert.ToInt32(ls[ind][2]),Convert.ToInt32(ls[ind+1][2])});ls[ind][0] = ls[ind+1][0] = x;ls[ind][1] = ls[ind+1][1] = y;}}long[][] ysco = sco.OrderBy(c => Math.Abs(c[0] - tx)).ToArray();List<long[]> ls2 = new List<long[]>();for(int i = 0;i < n;i++){if(ysco[i][2] == 0)continue;ls2.Add(ysco[i]);if(ls2.Count == 4)break;}long[][] sls = ls2.OrderBy(c => c[1]).ToArray();double[] ys = new double[]{Convert.ToDouble(ls2[0][1]) - ty,Convert.ToDouble(ls2[1][1]) - ty,Convert.ToDouble(ls2[2][1]) - ty,Convert.ToDouble(ls2[3][1]) - ty};min = Double.PositiveInfinity;simulate(ys, int.Min(14, 49 - ret.Count), new List<int>());foreach(int ind in best){long x = (ls2[ind][0] + ls2[ind+1][0]) / 2;long y = (ls2[ind][1] + ls2[ind+1][1]) / 2;ret.Add(new int[]{Convert.ToInt32(ls2[ind][2]),Convert.ToInt32(ls2[ind+1][2])});ls2[ind][0] = ls2[ind+1][0] = x;ls2[ind][1] = ls2[ind+1][1] = y;}int arg = -1;double vald = Double.PositiveInfinity;for(int i = 0;i < n;i++){if(co[i][2] == 0)continue;double d = Math.Max(Math.Abs(co[i][0] - tx), Math.Abs(co[i][1] - ty));if(d < vald){vald = d;arg = i;}}ret.Add(new int[]{0, (int)co[arg][2]});Console.WriteLine(ret.Count);foreach(int[] r in ret){Console.WriteLine($"{r[0]+1} {r[1]+1}");}}static double min;static List<int> best = new List<int>();static void simulate(double[] a, int rem, List<int> route){for(int i = 0;i < 4;i++){if(Math.Abs(a[i]) < min){min = Math.Abs(a[i]);best = new List<int>(route);}}if(rem == 0)return;for(int i = 0;i < 3;i++){if(a[i] == a[i+1])continue;double[] b = (double[])a.Clone();double v = (b[i] + b[i+1]) / 2;b[i] = b[i+1] = v;route.Add(i);simulate(b, rem-1, route);route.RemoveAt(route.Count-1);}}static string ns(){return Console.ReadLine();}static int ni(){return Convert.ToInt32(ns());}static int[] na(){return ns().Split(' ').Select(int.Parse).ToArray();}static long[] nal(){return ns().Split(' ').Select(long.Parse).ToArray();}static long[][] nml(int n){long[][] ret = new long[n][];for (int i = 0; i < n; i++){long[] f = nal();ret[i] = new long[]{f[0], f[1], i};}return ret;}}