結果
| 問題 |
No.206 数の積集合を求めるクエリ
|
| コンテスト | |
| ユーザー |
eitaho
|
| 提出日時 | 2016-11-23 03:35:15 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
AC
|
| 実行時間 | 346 ms / 7,000 ms |
| コード長 | 4,431 bytes |
| コンパイル時間 | 1,051 ms |
| コンパイル使用メモリ | 110,976 KB |
| 実行使用メモリ | 42,368 KB |
| 最終ジャッジ日時 | 2024-11-27 09:47:09 |
| 合計ジャッジ時間 | 7,078 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 28 |
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.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using Enu = System.Linq.Enumerable;
public class Program
{
public void Solve()
{
int L = Reader.Int(), M = Reader.Int(), N = Reader.Int();
var A = Reader.IntArray(L);
var B = Reader.IntArray(M);
int Q = Reader.Int();
var X = new int[N + 1];
var Y = new int[N + 1];
foreach (int a in A) X[a] = 1;
foreach (int b in B) Y[N - b] = 1;
var res = new FFTMod().Mult(X, Y);
Console.WriteLine(string.Join("\n", res.Skip(N).Take(Q)));
}
}
class FFTMod
{
int Mod, PrimitiveRoot;
public long[] Mult(int[] A, int[] B) { return Mult(A, B, 167772161, 3); }
public long[] Mult(int[] A, int[] B, int mod, int primitiveRoot)
{
Mod = mod;
PrimitiveRoot = primitiveRoot;
int N = A.Length + B.Length - 1;
int N2 = N;
while ((N2 & N2 - 1) != 0) N2 += N2 & -N2;
long[] a = new long[N2], b = new long[N2];
for (int i = 0; i < A.Length; i++) a[i] = A[i];
for (int i = 0; i < B.Length; i++) b[i] = B[i];
Transform(a);
Transform(b);
for (int i = 0; i < N2; i++) a[i] = a[i] * b[i] % Mod;
Transform(a, true);
long inv = Power(N2, Mod - 2);
for (int i = 0; i < N2; i++) a[i] = a[i] * inv % mod;
return a;
}
void Transform(long[] A, bool inv = false)
{
int N = A.Length;
long H = Power(PrimitiveRoot, (Mod - 1) / N);
if (inv) H = Power(H, Mod - 2);
for (int a = 0, b = 0; b < N; ++b)
{
if (b < a) { var t = A[a]; A[a] = A[b]; A[b] = t; }
for (int k = N >> 1; k > (a ^= k); k >>= 1) { }
}
for (int m = 1; m < N; m <<= 1)
{
int m2 = m << 1;
long b = Power(H, N / m2);
long w = 1;
for (int a = 0; a < m; ++a, w = w * b % Mod)
for (int k = a; k < N; k += m2)
{
long x = A[k];
long y = A[k + m] * w % Mod;
long tx = x + y;
long ty = x - y;
A[k] = tx >= Mod ? tx - Mod : tx;
A[k + m] = ty < 0 ? ty + Mod : ty;
}
}
}
long Power(long x, long n)
{
long res = 1;
if ((x %= Mod) < 0) x += Mod;
for (; n > 0; n >>= 1, x = x * x % Mod)
if ((n & 1) == 1) res = res * x % Mod;
return res;
}
}
class Entry { static void Main() { new Program().Solve(); } }
class Reader
{
static TextReader reader = Console.In;
static readonly char[] separator = { ' ' };
static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries;
static string[] A = new string[0];
static int i;
static void Init() { A = new string[0]; }
public static void Set(TextReader r) { reader = r; Init(); }
public static void Set(string file) { reader = new StreamReader(file); Init(); }
public static bool HasNext() { return CheckNext(); }
public static string String() { return Next(); }
public static int Int() { return int.Parse(Next()); }
public static long Long() { return long.Parse(Next()); }
public static double Double() { return double.Parse(Next()); }
public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); }
public static int[] IntArray(int N) { return Range(N, Int); }
public static int[][] IntTable(int H) { return Range(H, IntLine); }
public static string[] StringArray(int N) { return Range(N, Next); }
public static string[][] StringTable(int N) { return Range(N, () => Split(Line())); }
public static string Line() { return reader.ReadLine().Trim(); }
public static T[] Range<T>(int N, Func<T> f) { var r = new T[N]; for (int i = 0; i < N; r[i++] = f()) ; return r; }
static string[] Split(string s) { return s.Split(separator, op); }
static string Next() { CheckNext(); return A[i++]; }
static bool CheckNext()
{
if (i < A.Length) return true;
string line = reader.ReadLine();
if (line == null) return false;
if (line == "") return CheckNext();
A = Split(line);
i = 0;
return true;
}
}
eitaho