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 |
|
| 提出日時 | 2017-02-17 02:35:40 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 2,211 ms / 7,000 ms |
| コード長 | 2,497 bytes |
| コンパイル時間 | 4,522 ms |
| コンパイル使用メモリ | 77,652 KB |
| 実行使用メモリ | 97,304 KB |
| 最終ジャッジ日時 | 2024-12-30 21:43:17 |
| 合計ジャッジ時間 | 37,458 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 28 |
ソースコード
import java.util.*;
class Main {
static int L, M, N, Q;
static int[] A, B;
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
L = sc.nextInt();
M = sc.nextInt();
N = sc.nextInt();
int[] A = new int[N + 1];
int[] B = new int[N + 1];
for (int i = 0; i < L; ++i) {
A[sc.nextInt()] = 1;
}
for (int i = 0; i < M; ++i) {
B[N - sc.nextInt()] = 1;
}
Q = sc.nextInt();
Complex[] mul = mul(A, B);
for (int i = 0; i < Q; ++i) {
System.out.println(Math.round(mul[N + i].re));
}
}
static Complex[] mul(int[] a, int[] b) {
int n = 1;
while (n < a.length + b.length)
n *= 2;
Complex[] ac = new Complex[n];
Complex[] bc = new Complex[n];
for (int i = 0; i < n; ++i) {
ac[i] = new Complex(0, 0);
bc[i] = new Complex(0, 0);
}
for (int i = 0; i < a.length; ++i) {
ac[i].re = a[i];
}
for (int i = 0; i < b.length; ++i) {
bc[i].re = b[i];
}
ac = fft(ac, false);
bc = fft(bc, false);
for (int i = 0; i < ac.length; ++i) {
ac[i] = ac[i].mul(bc[i]);
}
ac = fft(ac, true);
for (int i = 0; i < ac.length; ++i) {
ac[i].re /= n;
ac[i].co /= n;
}
return ac;
}
static Complex[] fft(Complex[] a, boolean rev) {
int n = a.length;
if (n == 1)
return a;
int c = 0;
for (int i = 1; i < n; ++i) {
int j;
for (j = n >> 1; j > (c ^= j); j >>= 1)
;
if (c > i) {
Complex tmp = a[c];
a[c] = a[i];
a[i] = tmp;
}
}
for (int d = 1; d < n; d <<= 1) {
for (int j = 0; j < d; ++j) {
Complex mul = exp(2 * Math.PI / (2 * d) * (rev ? -1 : 1) * j);
for (int pos = 0; pos < n; pos += 2 * d) {
double ure = a[pos + j].re;
double uco = a[pos + j].co;
double vre = a[pos + j + d].re * mul.re - a[pos + j + d].co * mul.co;
double vco = a[pos + j + d].co * mul.re + a[pos + j + d].re * mul.co;
a[pos + j].re = ure + vre;
a[pos + j].co = uco + vco;
a[pos + j + d].re = ure - vre;
a[pos + j + d].co = uco - vco;
}
}
}
return a;
}
static class Complex {
double re, co;
public Complex(double re, double co) {
this.re = re;
this.co = co;
}
Complex add(Complex o) {
return new Complex(re + o.re, co + o.co);
}
Complex subtract(Complex o) {
return new Complex(re - o.re, co - o.co);
}
Complex mul(Complex o) {
return new Complex(re * o.re - co * o.co, re * o.co + o.re * co);
}
}
static Complex exp(double theta) {
return new Complex(Math.cos(theta), Math.sin(theta));
}
}