結果
| 問題 | No.972 選び方のスコア |
| ユーザー |
 fgwiebfaoish
|
| 提出日時 | 2020-01-18 05:57:00 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 8,280 bytes |
| コンパイル時間 | 1,678 ms |
| コンパイル使用メモリ | 114,108 KB |
| 実行使用メモリ | 59,504 KB |
| 最終ジャッジ日時 | 2024-06-26 10:49:01 |
| 合計ジャッジ時間 | 12,956 ms |
|
ジャッジサーバーID （参考情報） |
judge1 / judge3 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 25 WA * 7 |
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.Collections;using System.Collections.Specialized;using System.Linq;using System.Text;using System.IO;using System.Reflection;using static System.Math;using System.Numerics;static class Program{const int mod=(int)1e9+7;static void Main(){Sc sc=new Sc();var n=sc.I;var a=sc.Ia;Array.Sort(a);var avl=new Avl();avl.Ud2(a[0],a[0]);long ans=0;for(int i = 1;i<n-i;i++) {avl.Ud2(a[i],a[i]);avl.Ud2(a[n-i],a[n-i]);int c=avl.Ra((avl.cnt+1)>>1).n;long p=(avl.Rd(c+1,mod)-((long)avl.Rg(c+1,mod))*c)-(((long)avl.Rg(0,c-1)*c)-avl.Rd(0,c-1));ans=Max(ans,p);}Console.WriteLine("{0}",ans);}}public class Avl{public class Nd{public int h=1,c=1;public readonly int n;public long d,ds;public Nd l,r;public Nd(int n,long d,Nd du){this.n=n;this.d=d;ds=d;l=du;r=du;}}public Nd root,du;public int cnt=0;public Avl(){du=new Nd(int.MinValue,0,du);du.h=0;du.c=0;root=du;}public void Ud(int n,long d){if(root==du){root=new Nd(n,d,du);cnt++;}else if(root.n==n){root.d+=d;root.ds+=d;}else if(Fu(root,n,d)){if(Abs(root.l.h-root.r.h)>1){root=Rotate(root);}cnt++;}}public void Ud2(int n,long d){if(root==du){root=new Nd(n,d,du);cnt++;}else{Fu2(root,n,d);if(Abs(root.l.h-root.r.h)>1){root=Rotate(root);}cnt++;}}private bool Fu(Nd t,int n,long d){t.ds+=d;bool bo=false;if(t.n>n){if(t.l!=du){if(t.l.n==n){t.l.d+=d;t.l.ds+=d;}else if(bo=Fu(t.l,n,d)){t.c++;if(Abs(t.l.l.h-t.l.r.h)>1){t.l=Rotate(t.l);}t.h=Max(t.l.h,t.r.h)+1;}}else{t.l=new Nd(n,d,du);bo=true;t.c++;t.h=Max(t.l.h,t.r.h)+1;}}else{if(t.r!=du){if(t.r.n==n){t.r.d+=d;t.r.ds+=d;}else if(bo=Fu(t.r,n,d)){t.c++;if(Abs(t.r.l.h-t.r.r.h)>1){t.r=Rotate(t.r);}t.h=Max(t.l.h,t.r.h)+1;}}else{t.r=new Nd(n,d,du);bo=true;t.c++;t.h=Max(t.l.h,t.r.h)+1;}}return bo;}private void Fu2(Nd t,int n,long d){t.ds+=d;if(t.n>n){if(t.l!=du){Fu2(t.l,n,d);t.c++;if(Abs(t.l.l.h-t.l.r.h)>1){t.l=Rotate(t.l);}t.h=Max(t.l.h,t.r.h)+1;}else{t.l=new Nd(n,d,du);t.c++;t.h=Max(t.l.h,t.r.h)+1;}}else{if(t.r!=du){Fu2(t.r,n,d);t.c++;if(Abs(t.r.l.h-t.r.r.h)>1){t.r=Rotate(t.r);}t.h=Max(t.l.h,t.r.h)+1;}else{t.r=new Nd(n,d,du);t.c++;t.h=Max(t.l.h,t.r.h)+1;}}}private Nd Rotate(Nd t){Nd nd=du;if(t.l.h>t.r.h){if(t.l.l.h>t.l.r.h){nd=t.l;t.l=t.l.r;nd.r=t;Ft(t);}else{nd=t.l.r;t.l.r=nd.l;nd.l=t.l;Ft(t.l);t.l=nd.r;nd.r=t;Ft(t);}}else{if(t.r.l.h>t.r.r.h){nd=t.r.l;t.r.l=nd.r;nd.r=t.r;Ft(t.r);t.r=nd.l;nd.l=t;Ft(t);}else{nd=t.r;t.r=t.r.l;nd.l=t;Ft(t);}}Ft(nd);return nd;}private void Ft(Nd t){t.h=Max(t.l.h,t.r.h)+1;t.c=t.l.c+t.r.c+1;t.ds=t.l.ds+t.r.ds+t.d;}public bool Dl(int n){if(cnt==0){return false;}Nd t=root;if(t.n==n){root=Fd2(root);if(cnt==0){return true;}else if(Abs(root.l.h-root.r.h)>1){root=Rotate(root);}else{Ft(root);}return true;}bool bo=Fd1(root,n);if(Abs(root.l.h-root.r.h)>1){root=Rotate(root);}else{Ft(root);}return bo;}private bool Fd1(Nd t,int n){if(t.n>n){if(t.l==du){return false;}else if(t.l.n!=n){bool bo=Fd1(t.l,n);if(Abs(t.l.l.h-t.l.r.h)>1){t.l=Rotate(t.l);}else{Ft(t.l);}return bo;}else{t.l=Fd2(t.l);Ft(t);return true;}}else{if(t.r==du){return false;}else if(t.r.n!=n){bool bo=Fd1(t.r,n);if(Abs(t.r.l.h-t.r.r.h)>1){t.r=Rotate(t.r);}else{Ft(t.r);}return bo;}else{t.r=Fd2(t.r);Ft(t);return true;}}}private Nd Fd2(Nd dn){cnt--;if(dn.l==du){return dn.r;}if(dn.r==du){return dn.l;}Nd u=dn.l;if(u.r==du){u.r=dn.r;Ft(u);return u;}u=Fd3(u,dn);if(Abs(dn.l.l.h-dn.l.r.h)>1){u.l=Rotate(dn.l);}else{Ft(dn.l);}Ft(u);return u;}private Nd Fd3(Nd u,Nd dn){if(u.r.r!=du){Nd v=Fd3(u.r,dn);if(Abs(u.r.l.h-u.r.r.h)>1){u.r=Rotate(u.r);}else{Ft(u.r);}return v;}else{Nd v=u.r;u.r=u.r.l;v.l=dn.l;v.r=dn.r;return v;}}public Nd Hs(int n){Nd t=root;if(cnt==0){return null;}if(t.n==n){return t;}Nd a=null;while(true){if(t.n>n){if(t.l==du){break;}else if(t.l.n!=n){t=t.l;}else{a=t.l;break;}}else{if(t.r==du){break;}else if(t.r.n!=n){t=t.r;}else{a=t.r;break;}}}return a;}public Nd Ra(int n){return cnt>=n?Fr(root,n):null;}private Nd Fr(Nd t,int n){if(t.l.c>n-1){return Fr(t.l,n);}if(t.l.c<n-1){return Fr(t.r,n-t.l.c-1);}return t;}public Nd Lb(int n){return cnt!=0?Flb(root,n):null;}private Nd Flb(Nd t,int n){if(t.n<n){if(t.r==du){return null;}return Flb(t.r,n);}if(t.n>n){if(t.l==du){return t;}Nd u=Flb(t.l,n);return u==null?t:u;}return t;}public Nd Ub(int n){return cnt!=0?Fub(root,n):null;}private Nd Fub(Nd t,int n){if(t.n>n){if(t.l==du){return null;}return Fub(t.l,n);}if(t.n<n){if(t.r==du){return t;}Nd u=Fub(t.r,n);return u==null?t:u;}return t;}public int Rg(int a,int b){return cnt!=0?Frg(root,a,b,false,false):0;}private int Frg(Nd t,int a,int b,bool l,bool r){if(t.h==0){return 0;}if(l&&r){return t.c;}if(t.n<a){return Frg(t.r,a,b,t.n>=a,r);}if(t.n>b){return Frg(t.l,a,b,l,t.n<=b);}return Frg(t.l,a,b,l,t.n<=b)+Frg(t.r,a,b,t.n>=a,r)+1;}public long Rd(int a,int b){return cnt!=0?Frd(root,a,b,false,false):0;}private long Frd(Nd t,int a,int b,bool l,bool r){if(t.h==0){return 0;}if(l&&r){return t.ds;}if(t.n<a){return Frd(t.r,a,b,t.n>=a,r);}if(t.n>b){return Frd(t.l,a,b,l,t.n<=b);}return Frd(t.l,a,b,l,t.n<=b)+Frd(t.r,a,b,t.n>=a,r)+t.d;}public void Ad(int n,int d){Nd t=root;if(cnt==0){return;}if(t.n==n){t.d+=d;t.ds+=d;return;}while(true){t.ds+=d;if(t.n>n){if(t.l==du){break;}else if(t.l.n!=n){t=t.l;}else{t.l.d+=d;t.l.ds+=d;break;}}else{if(t.r==du){break;}else if(t.r.n!=n){t=t.r;}else{t.r.d+=d;t.r.ds+=d;break;}}}}public void En(Action<Nd> f){if(cnt>0){Fen(root,f);}}private void Fen(Nd t,Action<Nd> f){f(t);if(t.l!=du){Fen(t.l,f);}if(t.r!=du){Fen(t.r,f);}}}public class Sc{public int I{get{return int.Parse(Console.ReadLine());}}public long L{get{return long.Parse(Console.ReadLine());}}public double D{get{return double.Parse(Console.ReadLine());}}public string S{get{return Console.ReadLine();}}public int[] Ia{get{return Array.ConvertAll(Console.ReadLine().Split(),int.Parse);}}public long[] La{get{return Array.ConvertAll(Console.ReadLine().Split(),long.Parse);}}public double[] Da{get{return Array.ConvertAll(Console.ReadLine().Split(),double.Parse);}}public string[] Sa{get{return Console.ReadLine().Split();}}public object[] Oa{get{return Console.ReadLine().Split();}}public int[] Ia2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),int.Parse);}}public int[] Ia3(int a){return Array.ConvertAll((a.ToString()+" "+Console.ReadLine()).Split(),int.Parse);}public int[] Ia3(bool a,int b,bool c,int d){return Array.ConvertAll(((a?b.ToString()+" ":"")+Console.ReadLine()+(c?" "+d.ToString():"")).Split(),int.Parse);}public long[] La2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),long.Parse);}}public long[] La3(int a){return Array.ConvertAll((a.ToString()+" "+Console.ReadLine()).Split(),long.Parse);}public long[] La3(bool a,int b,bool c,int d){return Array.ConvertAll(((a?b.ToString()+" ":"")+Console.ReadLine()+(c?" "+d.ToString():"")).Split(),long.Parse);}public T[] Arr<T>(int n,Func<T> f){var a=new T[n];for(int i=0;i<n;i++){a[i]=f();}return a;}public T[] Arr<T>(int n,Func<int,T> f){var a=new T[n];for(int i=0;i<n;i++){a[i]=f(i);}return a;}public T[] Arr<T>(int n,Func<string[],T> f){var a=new T[n];for(int i=0;i<n;i++){a[i]=f(Console.ReadLine().Split());}return a;}public T[] Arr<T>(int n,Func<int,string[],T> f){var a=new T[n];for(int i=0;i<n;i++){a[i]=f(i,Console.ReadLine().Split());}return a;}}