結果
| 問題 |
No.3187 Mingle
|
| ユーザー |
 KumaTachiRen
|
| 提出日時 | 2025-06-20 22:41:39 |
| 言語 | C# (.NET 8.0.404) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 7,926 bytes |
| コンパイル時間 | 8,124 ms |
| コンパイル使用メモリ | 169,908 KB |
| 実行使用メモリ | 185,968 KB |
| 最終ジャッジ日時 | 2025-06-20 22:42:48 |
| 合計ジャッジ時間 | 67,842 ms |
|
ジャッジサーバーID （参考情報） |
judge2 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 9 TLE * 21 |
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 (109 ミリ秒)。 main -> /home/judge/data/code/bin/Release/net8.0/main.dll main -> /home/judge/data/code/bin/Release/net8.0/publish/
ソースコード
using Lib;
using Lib.MathLib;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using static Lib.OutputLib;
public class Solver
{
const bool MultiTestCase = false;
void Solve()
{
int n = ri, p = ri;
var inv = new long[n + 1];
inv[1] = 1;
for (int i = 2; i <= n; i++) inv[i] = (p - p / i) * inv[p % i] % p;
var d = new int[n + 1];
for (int i = 1; i <= n; i++)
for (int j = i; j <= n; j += i)
d[j]++;
var sum = new long[(int)FloorRoot.Calc((ulong)n) + 1][];
for (int i = 1; i < sum.Length; i++) sum[i] = new long[n / i + 1];
var dp = new long[n + 1];
int sq = 1;
for (int k = 3; k <= n; k++)
{
while ((sq + 1) * (sq + 1) <= k) sq++;
long v = 0;
//for (int i = 1; i <= k; i++) v += dp[k / i * i];
for (int i = 1; i <= k / sq; i++)
{
if (k % i == 0) continue;
v += dp[k / i * i];
}
for (int x = 1; x < sq; x++)
{
int l = k / (x + 1), r = k / x;
if (k % x == 0) r--;
v += sum[x][r] - sum[x][l];
// floor(k/i)=x
// l<i<=r
// x*(l+1),...,x*r
}
v = (v % p * inv[k - d[k]] + k * inv[k - d[k]]) % p;
dp[k] = v;
for (int x = 1; x * x <= k; x++) if (k % x == 0) sum[x][k / x] = sum[x][k / x - 1] + v;
}
Write(dp[n]);
}
#pragma warning disable CS0162, CS8618
public Solver() { if (!MultiTestCase) Solve(); else for (int t = ri; t > 0; t--) Solve(); }
#pragma warning restore CS0162, CS8618
const int IINF = 1 << 30;
const long INF = 1L << 60;
int ri { [MethodImpl(256)] get => (int)sc.Integer(); }
long rl { [MethodImpl(256)] get => sc.Integer(); }
uint rui { [MethodImpl(256)] get => (uint)sc.UInteger(); }
ulong rul { [MethodImpl(256)] get => sc.UInteger(); }
double rd { [MethodImpl(256)] get => sc.Double(); }
string rs { [MethodImpl(256)] get => sc.Scan(); }
string rline { [MethodImpl(256)] get => sc.Line(); }
public StreamScanner sc = new StreamScanner(Console.OpenStandardInput());
void ReadArray(out int[] a, int n) { a = new int[n]; for (int i = 0; i < a.Length; i++) a[i] = ri; }
void ReadArray(out long[] a, int n) { a = new long[n]; for (int i = 0; i < a.Length; i++) a[i] = rl; }
void ReadArray<T>(out T[] a, int n, Func<T> read) { a = new T[n]; for (int i = 0; i < a.Length; i++) a[i] = read(); }
void ReadArray<T>(out T[] a, int n, Func<int, T> read) { a = new T[n]; for (int i = 0; i < a.Length; i++) a[i] = read(i); }
}
static class Program
{
static public void Main(string[] args)
{
SourceExpander.Expander.Expand();
Console.SetOut(new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false });
new Solver();
Console.Out.Flush();
}
}
#region Expanded by https://github.com/kzrnm/SourceExpander
namespace Lib{public partial class StreamScanner{public StreamScanner(Stream stream){str=stream;}private readonly Stream str;private readonly byte[]buf=new byte[1024];private int len,ptr;public bool isEof=false;public bool IsEndOfStream{get{return isEof;}}[MethodImpl(256)]private byte Read(){if(isEof)throw new EndOfStreamException();if(ptr>=len){ptr=0;if((len=str.Read(buf,0,1024))<=0){isEof=true;return 0;}}return buf[ptr++];}[MethodImpl(256)]public char Char(){byte b;do b=Read();while(b<33||126<b);return(char)b;}[MethodImpl(256)]public string Line(){var sb=new StringBuilder();for(var b=Char();b!=10&&!isEof;b=(char)Read())sb.Append(b);return sb.ToString();}[MethodImpl(256)]public string Scan(){var sb=new StringBuilder();for(var b=Char();b>=33&&b<=126;b=(char)Read())sb.Append(b);return sb.ToString();}[MethodImpl(256)]public long Integer(){long ret=0;var ng=false;byte b;do b=Read();while(b!='-'&&(b<'0'||'9'<b));if(b=='-'){ng=true;b=Read();}for(;'0'<=b&&b<='9';b=Read())ret=ret*10+(b^'0');return ng?-ret:ret;}[MethodImpl(256)]public ulong UInteger(){ulong ret=0;byte b;do b=Read();while(b<'0'||'9'<b);for(;'0'<=b&&b<='9';b=Read())ret=ret*10+(ulong)(b^'0');return ret;}[MethodImpl(256)]public double Double()=>double.Parse(Scan());}}
namespace Lib.MathLib{public static class FloorRoot{public static ulong Calc(ulong n,int k=2,ulong r=0){if(n<=1||k==1)return n;if(k>=64)return 1;ulong l=0;if(r==0)r=1UL<<(63/k+1);ulong p=1UL<<(63/k);while(r-l>1){ulong m=l+(r-l)/2;if(m>p){ulong x=n;for(int i=0;i<k;i++)x/=m;if(x==0)r=m;else l=m;}else{ulong x=1,a=m;int t=k;while(t!=0){if((t&1)==1)x*=a;a*=a;t>>=1;}if(x>n)r=m;else l=m;}}return l;}public static long[]Table(long n,int m=60){LinearSieve.Calc(m);var lpf=LinearSieve.LPF;var ret=new long[m+1];ret[1]=n;for(int k=2;k<=m;k++)ret[k]=(long)Calc((ulong)ret[k/lpf[k]],lpf[k]);return ret;}}}
namespace Lib.MathLib{public static class LinearSieve{public static List<int>Primes;public static int[]LPF;public static int[]Table(int max){Calc(max);int l=Primes.Count;while(l>0&&Primes[l-1]>max)l--;var ret=new int[l];for(int i=0;i<l;i++)ret[i]=Primes[i];return ret;}public static void Calc(int max){if(Primes==null){Primes=new List<int>();LPF=new int[max+1];CalcInner(2,max);}else if(LPF.Length-1<max){int min=LPF.Length;Array.Resize(ref LPF,max+1);CalcInner(min,max);}}private static void CalcInner(int min,int max){for(int d=2;d<min;d++)for(int j=0;j<Primes.Count;j++){int p=Primes[j];if((long)p*d>max||p>LPF[d])break;LPF[(long)p*d]=p;}for(int d=min;d<=max;d++){if(LPF[d]==0){LPF[d]=d;Primes.Add(d);}for(int j=0;j<Primes.Count;j++){int p=Primes[j];if((long)p*d>max||p>LPF[d])break;LPF[(long)p*d]=p;}}}}}
namespace Lib{public static class OutputLib{[MethodImpl(256)]public static void WriteJoin<T>(string s,IEnumerable<T>t)=>Console.WriteLine(string.Join(s,t));[MethodImpl(256)]public static void WriteMat<T>(T[,]a,string sep=" "){int sz1=a.GetLength(0),sz2=a.GetLength(1);var b=new T[sz2];for(int i=0;i<sz1;i++){for(int j=0;j<sz2;j++)b[j]=a[i,j];WriteJoin(sep,b);}}[MethodImpl(256)]public static void WriteMat<T>(T[][]a,string sep=" "){foreach(var ar in a)WriteJoin(sep,ar);}[MethodImpl(256)]public static void WriteMat<T>(T[][]a,Func<T,string>map,string sep=" "){foreach(var ar in a)WriteJoin(sep,ar.Select(x=>map(x)));}[MethodImpl(256)]public static void Write(object t)=>Console.WriteLine(t.ToString());[MethodImpl(256)]public static void Write(params object[]arg)=>Console.WriteLine(string.Join(" ",arg.Select(x=>x.ToString())));[MethodImpl(256)]public static void Write(string str)=>Console.WriteLine(str);[MethodImpl(256)]public static void WriteFlush(object t){Console.WriteLine(t.ToString());Console.Out.Flush();}[MethodImpl(256)]public static void WriteError(object t)=>Console.Error.WriteLine(t.ToString());[MethodImpl(256)]public static void Flush()=>Console.Out.Flush();[MethodImpl(256)]public static void YN(bool t)=>Console.WriteLine(t?"YES":"NO");[MethodImpl(256)]public static void Yn(bool t)=>Console.WriteLine(t?"Yes":"No");[MethodImpl(256)]public static void yn(bool t)=>Console.WriteLine(t?"yes":"no");[MethodImpl(256)]public static void DeleteLine()=>Console.Write("\x1b[1A\x1b[2K");[MethodImpl(256)]public static void ProgressBar(long now,long total,int blocks=50){int x=(int)((2*now*blocks+1)/(2*total));Console.Write($"\x1b[G[\x1b[42m{string.Concat(Enumerable.Repeat("_",x))}\x1b[0m{string.Concat(Enumerable.Repeat("_",blocks-x))}] : {now} / {total}");}}}
namespace SourceExpander{public class Expander{[Conditional("EXP")]public static void Expand(string inputFilePath=null,string outputFilePath=null,bool ignoreAnyError=true){}public static string ExpandString(string inputFilePath=null,bool ignoreAnyError=true){return "";}}}
#endregion Expanded by https://github.com/kzrnm/SourceExpander