結果
問題 | No.856 増える演算 |
ユーザー | 0w1 |
提出日時 | 2019-08-01 15:44:50 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,566 bytes |
コンパイル時間 | 2,243 ms |
コンパイル使用メモリ | 211,136 KB |
実行使用メモリ | 17,152 KB |
最終ジャッジ日時 | 2024-07-05 07:31:41 |
合計ジャッジ時間 | 11,697 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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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 | 2 ms
13,764 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
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 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | AC | 4 ms
5,376 KB |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | WA | - |
testcase_34 | WA | - |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | WA | - |
testcase_38 | WA | - |
testcase_39 | WA | - |
testcase_40 | WA | - |
testcase_41 | WA | - |
testcase_42 | WA | - |
testcase_43 | WA | - |
testcase_44 | WA | - |
testcase_45 | WA | - |
testcase_46 | WA | - |
testcase_47 | WA | - |
testcase_48 | WA | - |
testcase_49 | WA | - |
testcase_50 | WA | - |
testcase_51 | WA | - |
testcase_52 | WA | - |
testcase_53 | WA | - |
testcase_54 | WA | - |
testcase_55 | WA | - |
testcase_56 | WA | - |
testcase_57 | WA | - |
testcase_58 | WA | - |
testcase_59 | WA | - |
testcase_60 | WA | - |
testcase_61 | WA | - |
testcase_62 | WA | - |
testcase_63 | WA | - |
testcase_64 | WA | - |
testcase_65 | WA | - |
testcase_66 | WA | - |
testcase_67 | WA | - |
testcase_68 | WA | - |
testcase_69 | WA | - |
testcase_70 | WA | - |
testcase_71 | WA | - |
testcase_72 | WA | - |
testcase_73 | WA | - |
testcase_74 | WA | - |
testcase_75 | WA | - |
testcase_76 | WA | - |
testcase_77 | WA | - |
testcase_78 | WA | - |
testcase_79 | WA | - |
testcase_80 | WA | - |
testcase_81 | WA | - |
testcase_82 | TLE | - |
ソースコード
#include <bits/stdc++.h> using namespace std; typedef complex<double> cpx; const double PI = acos(-1); vector<cpx> FFT(vector<cpx> P, bool inv = 0) { assert(__builtin_popcount(P.size()) == 1); int lg = 31 - __builtin_clz(P.size()), n = 1 << lg; // == P.size(); for (int j = 1, i = 0; j < n - 1; ++j) { for (int k = n >> 1; k > (i ^= k); k >>= 1) ; if (j < i) swap(P[i], P[j]); } // bit reverse auto w1 = exp((2 - 4 * inv) * PI / n * cpx(0, 1)); // order is 1<<lg for (int i = 1; i <= lg; ++i) { auto wn = pow(w1, 1 << (lg - i)); // order is 1<<i for (int k = 0; k < (1 << lg); k += 1 << i) { cpx base = 1; for (int j = 0; j < (1 << i - 1); ++j, base = base * wn) { auto t = base * P[k + j + (1 << i - 1)]; auto u = P[k + j]; P[k + j] = u + t; P[k + j + (1 << i - 1)] = u - t; } } } if (inv) for (int i = 0; i < n; ++i) P[i] /= n; return P; } const int M = 1e9 + 7; int ipow(int v, int64_t n, int m = M) { int r = 1; while (n) { if (n & 1) r = 1LL * r * v % m; v = 1LL * v * v % m; n >>= 1; } return r; } int inv(int v, int m = M) { return ipow(v, m - 2, m); } int main() { ios::sync_with_stdio(false); int N; cin >> N; vector<int> A(N); for (int i = 0; i < N; ++i) { cin >> A[i]; } pair<int, int> dnr(A[0], A[1]); for (int i = N - 2, minp = A[N - 1]; ~i; --i) { auto log_eval = [](int x, int y) { return log(x + y) + y * log(x); }; if (log_eval(A[i], minp), log_eval(dnr.first, dnr.second)) { dnr = make_pair(A[i], minp); } minp = min(minp, A[i]); } vector<int64_t> pa(N + 1); for (int i = 0; i < N; ++i) { pa[i + 1] = pa[i] + A[i]; } int maxa = *max_element(A.begin(), A.end()); int maxa2 = maxa * 2 + 1; while (__builtin_popcount(maxa2) != 1) ++maxa2; vector<cpx> c(maxa2); for (int a : A) c[a] += 1.0; vector<cpx> fc = FFT(c); for (int i = 0; i < fc.size(); ++i) { fc[i] *= fc[i]; } vector<cpx> c2 = FFT(fc, true); int ans = 1; for (int s = 2; s < maxa * 2 + 1; ++s) { int64_t cs = int(real(c2[s]) + 0.5) / 2; if (~s & 1) cs -= int(real(c[s / 2]) + 0.5) / 2; ans = 1LL * ans * ipow(s, cs) % M; } for (int i = 0; i + 1 < N; ++i) { int sp = (pa[N] - pa[i + 1]) % M; ans = 1LL * ans * ipow(A[i], sp) % M; } int idnr = inv(1LL * (dnr.first + dnr.second) % M * ipow(dnr.first, dnr.second) % M); ans = 1LL * ans * idnr % M; cout << ans << endl; return 0; }