#363232 (Java) No.856 増える演算

提出ソース

結果

問題	No.856 増える演算
ユーザー	37zigen
提出日時	2019-07-27 10:59:51
言語	Java (openjdk 23)
結果	AC
実行時間	1,365 ms / 3,153 ms
コード長	3,625 bytes
コンパイル時間	3,161 ms
コンパイル使用メモリ	79,452 KB
実行使用メモリ	96,972 KB
最終ジャッジ日時	2024-07-02 10:57:21
合計ジャッジ時間	64,855 ms
ジャッジサーバーID （参考情報）	judge1 / judge3

このコードへのチャレンジ
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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
testcase_00	AC	420 ms 76,604 KB
testcase_01	AC	436 ms 76,776 KB
testcase_02	AC	442 ms 76,536 KB
testcase_03	AC	436 ms 76,432 KB
testcase_04	AC	451 ms 76,384 KB
testcase_05	AC	455 ms 76,308 KB
testcase_06	AC	430 ms 76,180 KB
testcase_07	AC	442 ms 76,884 KB
testcase_08	AC	440 ms 76,548 KB
testcase_09	AC	438 ms 76,612 KB
testcase_10	AC	442 ms 76,824 KB
testcase_11	AC	444 ms 76,664 KB
testcase_12	AC	433 ms 76,448 KB
testcase_13	AC	450 ms 76,284 KB
testcase_14	AC	450 ms 76,072 KB
testcase_15	AC	456 ms 76,532 KB
testcase_16	AC	459 ms 75,772 KB
testcase_17	AC	457 ms 76,316 KB
testcase_18	AC	451 ms 76,224 KB
testcase_19	AC	441 ms 76,176 KB
testcase_20	AC	440 ms 76,444 KB
testcase_21	AC	449 ms 76,160 KB
testcase_22	AC	446 ms 76,160 KB
testcase_23	AC	532 ms 73,972 KB
testcase_24	AC	592 ms 83,724 KB
testcase_25	AC	545 ms 79,472 KB
testcase_26	AC	446 ms 74,992 KB
testcase_27	AC	452 ms 76,236 KB
testcase_28	AC	554 ms 73,796 KB
testcase_29	AC	585 ms 84,452 KB
testcase_30	AC	586 ms 83,688 KB
testcase_31	AC	563 ms 79,204 KB
testcase_32	AC	577 ms 81,716 KB
testcase_33	AC	625 ms 79,356 KB
testcase_34	AC	711 ms 83,052 KB
testcase_35	AC	655 ms 79,748 KB
testcase_36	AC	719 ms 80,020 KB
testcase_37	AC	709 ms 79,780 KB
testcase_38	AC	530 ms 73,368 KB
testcase_39	AC	548 ms 83,876 KB
testcase_40	AC	607 ms 76,588 KB
testcase_41	AC	617 ms 81,432 KB
testcase_42	AC	761 ms 80,256 KB
testcase_43	AC	613 ms 84,588 KB
testcase_44	AC	439 ms 74,492 KB
testcase_45	AC	570 ms 84,560 KB
testcase_46	AC	615 ms 75,476 KB
testcase_47	AC	609 ms 85,052 KB
testcase_48	AC	635 ms 84,176 KB
testcase_49	AC	596 ms 80,236 KB
testcase_50	AC	699 ms 74,988 KB
testcase_51	AC	695 ms 80,268 KB
testcase_52	AC	781 ms 84,716 KB
testcase_53	AC	879 ms 89,716 KB
testcase_54	AC	710 ms 79,916 KB
testcase_55	AC	868 ms 93,020 KB
testcase_56	AC	682 ms 82,416 KB
testcase_57	AC	1,035 ms 80,748 KB
testcase_58	AC	862 ms 84,704 KB
testcase_59	AC	1,188 ms 90,436 KB
testcase_60	AC	795 ms 84,688 KB
testcase_61	AC	1,263 ms 96,444 KB
testcase_62	AC	1,207 ms 89,684 KB
testcase_63	AC	534 ms 82,012 KB
testcase_64	AC	1,120 ms 95,664 KB
testcase_65	AC	714 ms 81,172 KB
testcase_66	AC	793 ms 75,156 KB
testcase_67	AC	803 ms 77,280 KB
testcase_68	AC	1,207 ms 90,832 KB
testcase_69	AC	1,212 ms 94,976 KB
testcase_70	AC	1,158 ms 84,664 KB
testcase_71	AC	1,200 ms 95,904 KB
testcase_72	AC	1,112 ms 86,412 KB
testcase_73	AC	1,325 ms 96,596 KB
testcase_74	AC	1,248 ms 90,548 KB
testcase_75	AC	1,170 ms 96,704 KB
testcase_76	AC	1,246 ms 96,972 KB
testcase_77	AC	1,313 ms 90,676 KB
testcase_78	AC	1,178 ms 90,352 KB
testcase_79	AC	1,203 ms 96,676 KB
testcase_80	AC	1,312 ms 90,424 KB
testcase_81	AC	1,365 ms 95,892 KB
testcase_82	AC	1,192 ms 93,620 KB

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ソースコード

raw source code

import java.io.PrintWriter;
import java.util.ArrayDeque;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		new Main().run();
	}

	final long MOD = (long) 1e9 + 7;

	long inv(long a) {
		return pow(a, MOD - 2);
	}

	long pow(long a, long n) {
		long ret = 1;
		for (; n > 0; n >>= 1, a = a * a % MOD) {
			if (n % 2 == 1) {
				ret = ret * a % MOD;
			}
		}
		return ret;
	}

	void run() {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] A = new int[N];
		for (int i = 0; i < N; ++i) {
			A[i] = sc.nextInt();
		}
		long ans = 1;
		long sum = A[N - 1];
		for (int i = N - 2; i >= 0; --i) {
			ans = ans * pow(A[i], sum) % MOD;
			sum += A[i];
			sum %= MOD - 1;
		}
		long[] cnt = new long[100000 + 1];
		for (int i = 0; i < N; ++i)
			cnt[A[i]]++;
		long[] cnt2 = mul(cnt, cnt);
		for (int i = 0; i < N; ++i) {
			cnt2[2 * A[i]]--;
		}
		for (int i = 0; i < cnt2.length; ++i) {
			cnt2[i] /= 2;
			ans = ans * pow(i, cnt2[i]) % MOD;
		}

		long coe = -1;
		double v = Double.MAX_VALUE / 3;
		long min = A[0];
		for (int i = 1; i < N; ++i) {
			if (v > Math.log(A[i] + min) + A[i] * Math.log(min)) {
				v = Math.log(A[i] + min) + A[i] * Math.log(min);
				coe = (A[i] + min) % MOD * pow(min, A[i]) % MOD;
			}
			min = Math.min(min, A[i]);
		}

		ans = ans * inv(coe) % MOD;
		System.out.println(ans);
	}

	void tr(Object... objects) {
		System.out.println(Arrays.deepToString(objects));
	}

	static long[] mul(long[] a, long[] 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;
		}
		long[] ret = new long[ac.length];
		for (int i = 0; i < ret.length; ++i) {
			ret[i] = (long) Math.round(ac[i].re);
		}
		return ret;

	}

	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) {
				double angle = 2 * Math.PI / (2 * d) * (rev ? -1 : 1) * j;
				Complex mul = new Complex(Math.cos(angle), Math.sin(angle));
				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;
	}

	Complex exp(double a) {
		return new Complex(Math.cos(a), Math.sin(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);
		}
	}
}

yukicoder

結果

テストケース

ソースコード