結果
問題 | No.856 増える演算 |
ユーザー | pekempey |
提出日時 | 2019-07-26 22:12:59 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,838 bytes |
コンパイル時間 | 1,728 ms |
コンパイル使用メモリ | 180,608 KB |
実行使用メモリ | 63,332 KB |
最終ジャッジ日時 | 2024-07-02 07:35:52 |
合計ジャッジ時間 | 13,079 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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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 | 90 ms
62,892 KB |
testcase_01 | AC | 88 ms
62,708 KB |
testcase_02 | AC | 90 ms
62,720 KB |
testcase_03 | WA | - |
testcase_04 | AC | 88 ms
62,876 KB |
testcase_05 | AC | 88 ms
62,760 KB |
testcase_06 | AC | 88 ms
62,748 KB |
testcase_07 | AC | 89 ms
62,828 KB |
testcase_08 | AC | 94 ms
62,776 KB |
testcase_09 | WA | - |
testcase_10 | AC | 94 ms
62,896 KB |
testcase_11 | AC | 91 ms
62,720 KB |
testcase_12 | WA | - |
testcase_13 | AC | 95 ms
62,764 KB |
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 | AC | 91 ms
62,748 KB |
testcase_24 | AC | 92 ms
62,788 KB |
testcase_25 | AC | 91 ms
62,756 KB |
testcase_26 | AC | 92 ms
63,052 KB |
testcase_27 | AC | 91 ms
62,952 KB |
testcase_28 | AC | 94 ms
62,836 KB |
testcase_29 | AC | 96 ms
63,012 KB |
testcase_30 | AC | 92 ms
62,896 KB |
testcase_31 | AC | 92 ms
62,860 KB |
testcase_32 | AC | 91 ms
62,840 KB |
testcase_33 | AC | 96 ms
62,920 KB |
testcase_34 | AC | 99 ms
62,960 KB |
testcase_35 | AC | 98 ms
62,900 KB |
testcase_36 | AC | 103 ms
62,972 KB |
testcase_37 | AC | 102 ms
62,920 KB |
testcase_38 | AC | 92 ms
62,700 KB |
testcase_39 | AC | 94 ms
62,740 KB |
testcase_40 | AC | 96 ms
63,032 KB |
testcase_41 | AC | 94 ms
63,088 KB |
testcase_42 | AC | 105 ms
62,816 KB |
testcase_43 | AC | 96 ms
62,784 KB |
testcase_44 | WA | - |
testcase_45 | AC | 95 ms
62,708 KB |
testcase_46 | AC | 96 ms
62,832 KB |
testcase_47 | AC | 95 ms
62,732 KB |
testcase_48 | AC | 98 ms
62,852 KB |
testcase_49 | AC | 96 ms
62,864 KB |
testcase_50 | AC | 97 ms
62,840 KB |
testcase_51 | AC | 100 ms
62,808 KB |
testcase_52 | AC | 101 ms
62,876 KB |
testcase_53 | AC | 129 ms
63,056 KB |
testcase_54 | AC | 113 ms
62,932 KB |
testcase_55 | WA | - |
testcase_56 | WA | - |
testcase_57 | WA | - |
testcase_58 | AC | 122 ms
62,880 KB |
testcase_59 | AC | 147 ms
63,128 KB |
testcase_60 | WA | - |
testcase_61 | WA | - |
testcase_62 | AC | 140 ms
63,020 KB |
testcase_63 | WA | - |
testcase_64 | AC | 133 ms
62,940 KB |
testcase_65 | WA | - |
testcase_66 | WA | - |
testcase_67 | AC | 120 ms
63,008 KB |
testcase_68 | AC | 142 ms
63,072 KB |
testcase_69 | AC | 137 ms
63,052 KB |
testcase_70 | AC | 151 ms
63,128 KB |
testcase_71 | AC | 143 ms
63,108 KB |
testcase_72 | WA | - |
testcase_73 | AC | 154 ms
63,112 KB |
testcase_74 | AC | 158 ms
63,216 KB |
testcase_75 | WA | - |
testcase_76 | AC | 161 ms
63,224 KB |
testcase_77 | AC | 159 ms
63,084 KB |
testcase_78 | WA | - |
testcase_79 | AC | 154 ms
63,232 KB |
testcase_80 | AC | 157 ms
63,304 KB |
testcase_81 | AC | 157 ms
63,152 KB |
testcase_82 | AC | 138 ms
63,216 KB |
ソースコード
#include <bits/stdc++.h> #define rep(i, n) for (int i = 0; i < (n); i++) #define repr(i, n) for (int i = (n) - 1; i >= 0; i--) using namespace std; using ll = long long; constexpr int MOD = 1000000007; class mint { int n; public: mint(int n_ = 0) : n(n_) {} explicit operator int() { return n; } friend mint operator-(mint a) { return -a.n + MOD * (a.n != 0); } friend mint operator+(mint a, mint b) { int x = a.n + b.n; return x - (x >= MOD) * MOD; } friend mint operator-(mint a, mint b) { int x = a.n - b.n; return x + (x < 0) * MOD; } friend mint operator*(mint a, mint b) { return (long long)a.n * b.n % MOD; } friend mint &operator+=(mint &a, mint b) { return a = a + b; } friend mint &operator-=(mint &a, mint b) { return a = a - b; } friend mint &operator*=(mint &a, mint b) { return a = a * b; } friend bool operator==(mint a, mint b) { return a.n == b.n; } friend bool operator!=(mint a, mint b) { return a.n != b.n; } friend istream &operator>>(istream &i, mint &a) { return i >> a.n; } friend ostream &operator<<(ostream &o, mint a) { return o << a.n; } }; template<int N> class FFT { using C = complex<double>; C rots[N]; public: FFT() { const double pi = acos(-1); for (int i = 0; i < N / 2; i++) { rots[i + N / 2].real(cos(2 * pi / N * i)); rots[i + N / 2].imag(sin(2 * pi / N * i)); } for (int i = N / 2 - 1; i >= 1; i--) { rots[i] = rots[i * 2]; } } private: inline static C mul(C x, C y) { return C(x.real() * y.real() - x.imag() * y.imag(), x.real() * y.imag() + x.imag() * y.real()); } void fft(vector<C> &a, bool rev) { const int n = a.size(); int i = 0; for (int j = 1; j < n - 1; j++) { for (int k = n >> 1; k > (i ^= k); k >>= 1); if (j < i) swap(a[i], a[j]); } for (int i = 1; i < n; i *= 2) { for (int j = 0; j < n; j += i * 2) { for (int k = 0; k < i; k++) { C s = a[j + k + 0]; C t = mul(a[j + k + i], rots[i + k]); a[j + k + 0] = s + t; a[j + k + i] = s - t; } } } if (rev) { reverse(a.begin() + 1, a.end()); for (int i = 0; i < n; i++) { a[i] *= 1.0 / n; } } } public: vector<long long> convolution(vector<long long> a, vector<long long> b) { int t = 1; while (t < a.size() + b.size() - 1) t *= 2; vector<C> z(t); for (int i = 0; i < a.size(); i++) z[i].real(a[i]); for (int i = 0; i < b.size(); i++) z[i].imag(b[i]); fft(z, false); vector<C> w(t); for (int i = 0; i < t; i++) { C p = (z[i] + conj(z[(t - i) % t])) * C(0.5, 0); C q = (z[i] - conj(z[(t - i) % t])) * C(0, -0.5); w[i] = p * q; } fft(w, true); vector<long long> ans(a.size() + b.size() - 1); for (int i = 0; i < ans.size(); i++) { ans[i] = round(w[i].real()); } return ans; } vector<mint> convolution(vector<mint> a, vector<mint> b) { int t = 1; while (t < a.size() + b.size() - 1) t *= 2; vector<C> A(t), B(t); for (int i = 0; i < a.size(); i++) A[i] = C((int)a[i] & 0x7fff, (int)a[i] >> 15); for (int i = 0; i < b.size(); i++) B[i] = C((int)b[i] & 0x7fff, (int)b[i] >> 15); fft(A, false); fft(B, false); vector<C> X(t), Y(t); for (int i = 0; i < t; i++) { int j = (t - i) % t; C AL = (A[i] + conj(A[j])) * C(0.5, 0); C AH = (A[i] - conj(A[j])) * C(0, -0.5); C BL = (B[i] + conj(B[j])) * C(0.5, 0); C BH = (B[i] - conj(B[j])) * C(0, -0.5); X[i] = AL * BL + AH * BL * C(0, 1); Y[i] = AL * BH + AH * BH * C(0, 1); } fft(X, true); fft(Y, true); vector<mint> ans(a.size() + b.size() - 1); for (int i = 0; i < ans.size(); i++) { long long l = (long long)round(X[i].real()) % MOD; long long m = ((long long)round(X[i].imag()) + (long long)round(Y[i].real())) % MOD; long long h = (long long)round(Y[i].imag()) % MOD; ans[i] = (l + (m << 15) + (h << 30)) % MOD; } return ans; } }; mint modinv(mint n) { int a = (int)n; int b = MOD; int s = 1; int t = 0; while (b != 0) { int q = a / b; a -= q * b; s -= q * t; swap(a, b); swap(s, t); } if (s < 0) s += MOD; return s; } mint modpow(mint a, long long b) { mint res = 1; while (b > 0) { if (b & 1) res *= a; a *= a; b >>= 1; } return res; } FFT<1 << 21> fft; int main() { int n; cin >> n; vector<ll> f(1<<18); vector<int> a(n); rep(i, n) cin >> a[i], f[a[i]]++; f = fft.convolution(f, f); rep(i, n) f[2*a[i]]--; mint ans = 1; rep(i, 1 << 18) ans *= modpow(i, f[i] / 2); ll s = 0; rep(i, n) s += a[i]; rep(i, n) { s -= a[i]; ans *= modpow(a[i], s); } sort(a.begin(), a.end()); ans *= modinv((a[0] + a[1]) * modpow(a[0], a[1])); cout << ans << endl; }