結果
問題 | No.1507 Road Blocked |
ユーザー | fgwiebfaoish |
提出日時 | 2021-05-14 22:31:00 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 5,558 bytes |
コンパイル時間 | 2,273 ms |
コンパイル使用メモリ | 116,240 KB |
実行使用メモリ | 66,588 KB |
最終ジャッジ日時 | 2024-10-02 02:15:44 |
合計ジャッジ時間 | 28,533 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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 |
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testcase_00 | WA | - |
testcase_01 | WA | - |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
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; using System.Threading; using System.Runtime.CompilerServices; static class Program{ const int mod=998244353; static List<int>[] li; static bool[] b; static int[] g; static void Main(){ Sc sc=new Sc(); var s=sc.Ia; int n=s[0],m=n-1; li=new List<int>[n+1]; b=new bool[n+1]; g=new int[n+1]; for(int i=1;i<=n;i++){li[i]=new List<int>();} var h=new int[m][]; for(int i=0;i<m;i++){ h[i]=sc.Ia; li[h[i][0]].Add(h[i][1]); li[h[i][1]].Add(h[i][0]); } int r=1; Fu(r); var al=new Alca(li,true,r); Mint ans=0; for(int i = 0;i<m;i++) { long c=0,d=0; if(al.Di(r,h[i][0])<al.Di(r,h[i][1])){ c=n-g[h[i][1]]; d=g[h[i][1]]; } else{ c=g[h[i][0]]; d=n-g[h[i][0]]; } Mint p=(c*(c-1)/2+d*(d-1)/2)%mod; Mint q=(c*(c-1)/2+d*(d-1)/2+c*d)%mod; ans+=p/q; Console.WriteLine((c,d,c*(c-1)/2+d*(d-1)/2,c*d,p/q)); } Console.WriteLine("{0}",ans/(n-1)); } static void Fu(int a){ b[a]=true; g[a]=1; for(int i=0;i<li[a].Count;i++){ if(!b[li[a][i]]){ Fu(li[a][i]); g[a]+=g[li[a][i]]; } } } } public struct Mint{ const int mod=998244353; private long d; public Mint(long d){this.d=d;} public static implicit operator Mint(long d){return new Mint(d%mod);} public static explicit operator long(Mint d){return d.d;} public override string ToString(){return d.ToString();} public static Mint operator+(Mint a,long b){a.d=(a.d+b)%mod;return a;} public static Mint operator+(Mint a,Mint b){a.d=(a.d+b.d)%mod;return a;} public static Mint operator-(Mint a,long b){a.d=(mod+a.d-b)%mod;return a;} public static Mint operator-(Mint a,Mint b){a.d=(mod+a.d-b.d)%mod;return a;} public static Mint operator*(Mint a,long b){a.d=(a.d*b)%mod;return a;} public static Mint operator*(Mint a,Mint b){a.d=(a.d*b.d)%mod;return a;} public static Mint operator/(Mint a,long b){a.d=(a.d*Mi(b))%mod;return a;} public static Mint operator/(Mint a,Mint b){a.d=(a.d*Mi(b.d))%mod;return a;} public static bool operator==(Mint a,long b){return (long)a==b;} public static bool operator!=(Mint a,long b){return (long)a!=b;} public override bool Equals(object obj){return false;} public override int GetHashCode(){return 0;} public static long Mi(long a){ a=(a+mod)%mod; long b=mod,u=1,v=0; while(b>0){ long t=a/b; a-=t*b;(a,b)=(b,a); u-=t*v;(u,v)=(v,u); } u%=mod; if(u<0){u+=mod;} return u%mod; } } public class Alca{ private List<int>[] li; private readonly int[] at,l; public readonly int[] ix,de; private readonly int[][] g; private int f=0; public Alca(List<int>[] li,bool bo,int r){ int n=li.Length,z=(n<<1)-3,m=0; this.li=li; at=new int[z]; ix=new int[n]; de=new int[n]; if(bo){Fu1(r,1);} else{ for(int i = 1;i<n;i++) { if(de[i]==0){Fu1(i,1);f++;} } } m=(int)Log(z,2)+1; g=new int[m][]; g[0]=new int[z]; l=new int[z+1]; for(int i=0;i<z;i++){ g[0][i]=i; l[i+1]=l[i>>1]+1; } for(int i=1,k=1;i<m;i++,k<<=1){ int p=z+1-(k<<1); g[i]=new int[p]; for(int j=0;j<p;j++){g[i][j]=de[at[g[i-1][j]]]<de[at[g[i-1][j+k]]]?g[i-1][j]:g[i-1][j+k];} } } public int Lca(int a,int b){return Get(ix[a],ix[b]);} public int Di(int a,int b){ int p=Get(ix[a],ix[b]); return p!=0?de[a]+de[b]-(de[p]<<1):-1; } private int Get(int a,int b){ if(a>b){(a,b)=(b,a);} int p=l[b-a]; return at[de[at[g[p][a]]]<de[at[g[p][b+1-(1<<p)]]]?g[p][a]:g[p][b+1-(1<<p)]]; } private void Fu1(int a,int g){ at[f]=a; de[a]=g; ix[a]=f; f++; for(int i=0;i<li[a].Count;i++){ if(de[li[a][i]]==0){ Fu1(li[a][i],g+1); at[f]=a; 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(string a,string b){return Array.ConvertAll((a+Console.ReadLine()+b).Split(),int.Parse);} public long[] La2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),long.Parse);}} public long[] La3(string a,string b){return Array.ConvertAll((a+Console.ReadLine()+b).Split(),long.Parse);} public double[] Da2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),double.Parse);}} public double[] Da3(string a,string b){return Array.ConvertAll((a+Console.ReadLine()+b).Split(),double.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;} }