結果
問題 | No.2798 Multiple Chain |
ユーザー | hitonanode |
提出日時 | 2024-06-29 01:52:17 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 8 ms / 2,000 ms |
コード長 | 4,600 bytes |
コンパイル時間 | 1,571 ms |
コンパイル使用メモリ | 132,340 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-29 01:52:20 |
合計ジャッジ時間 | 3,091 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 1 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 2 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 2 ms
5,376 KB |
testcase_29 | AC | 2 ms
5,376 KB |
testcase_30 | AC | 2 ms
5,376 KB |
testcase_31 | AC | 2 ms
5,376 KB |
testcase_32 | AC | 2 ms
5,376 KB |
testcase_33 | AC | 2 ms
5,376 KB |
testcase_34 | AC | 8 ms
5,376 KB |
testcase_35 | AC | 2 ms
5,376 KB |
testcase_36 | AC | 2 ms
5,376 KB |
testcase_37 | AC | 2 ms
5,376 KB |
testcase_38 | AC | 2 ms
5,376 KB |
testcase_39 | AC | 2 ms
5,376 KB |
testcase_40 | AC | 2 ms
5,376 KB |
testcase_41 | AC | 2 ms
5,376 KB |
testcase_42 | AC | 2 ms
5,376 KB |
testcase_43 | AC | 1 ms
5,376 KB |
testcase_44 | AC | 2 ms
5,376 KB |
testcase_45 | AC | 2 ms
5,376 KB |
testcase_46 | AC | 2 ms
5,376 KB |
testcase_47 | AC | 2 ms
5,376 KB |
testcase_48 | AC | 2 ms
5,376 KB |
testcase_49 | AC | 2 ms
5,376 KB |
testcase_50 | AC | 2 ms
5,376 KB |
testcase_51 | AC | 2 ms
5,376 KB |
testcase_52 | AC | 2 ms
5,376 KB |
testcase_53 | AC | 2 ms
5,376 KB |
ソースコード
#include <algorithm> #include <cassert> #include <cstdint> #include <iostream> #include <map> #include <numeric> #include <vector> uint32_t rand_int() // XorShift random integer generator { static uint32_t x = 123456789, y = 362436069, z = 521288629, w = 88675123; uint32_t t = x ^ (x << 11); x = y; y = z; z = w; return w = (w ^ (w >> 19)) ^ (t ^ (t >> 8)); } double rand_double() { return (double)rand_int() / UINT32_MAX; } namespace SPRP { // http://miller-rabin.appspot.com/ const std::vector<std::vector<__int128>> bases{ {126401071349994536}, // < 291831 {336781006125, 9639812373923155}, // < 1050535501 (1e9) {2, 2570940, 211991001, 3749873356}, // < 47636622961201 (4e13) {2, 325, 9375, 28178, 450775, 9780504, 1795265022} // <= 2^64 }; inline int get_id(long long n) { if (n < 291831) { return 0; } else if (n < 1050535501) { return 1; } else if (n < 47636622961201) return 2; else { return 3; } } } // namespace SPRP // Miller-Rabin primality test // https://ja.wikipedia.org/wiki/%E3%83%9F%E3%83%A9%E3%83%BC%E2%80%93%E3%83%A9%E3%83%93%E3%83%B3%E7%B4%A0%E6%95%B0%E5%88%A4%E5%AE%9A%E6%B3%95 // Complexity: O(lg n) per query struct { long long modpow(__int128 x, __int128 n, long long mod) noexcept { __int128 ret = 1; for (x %= mod; n; x = x * x % mod, n >>= 1) ret = (n & 1) ? ret * x % mod : ret; return ret; } bool operator()(long long n) noexcept { if (n < 2) return false; if (n % 2 == 0) return n == 2; int s = __builtin_ctzll(n - 1); for (__int128 a : SPRP::bases[SPRP::get_id(n)]) { if (a % n == 0) continue; a = modpow(a, (n - 1) >> s, n); bool may_composite = true; if (a == 1) continue; for (int r = s; r--; a = a * a % n) { if (a == n - 1) may_composite = false; } if (may_composite) return false; } return true; } } is_prime; struct { // Pollard's rho algorithm: find factor greater than 1 long long find_factor(long long n) { assert(n > 1); if (n % 2 == 0) return 2; if (is_prime(n)) return n; long long c = 1; auto f = [&](__int128 x) -> long long { return (x * x + c) % n; }; for (int t = 1;; t++) { for (c = 0; c == 0 or c + 2 == n;) c = rand_int() % n; long long x0 = t, m = std::max(n >> 3, 1LL), x, ys, y = x0, r = 1, g, q = 1; do { x = y; for (int i = r; i--;) y = f(y); long long k = 0; do { ys = y; for (int i = std::min(m, r - k); i--;) y = f(y), q = __int128(q) * std::abs(x - y) % n; g = std::__gcd<long long>(q, n); k += m; } while (k < r and g <= 1); r <<= 1; } while (g <= 1); if (g == n) { do { ys = f(ys); g = std::__gcd(std::abs(x - ys), n); } while (g <= 1); } if (g != n) return g; } } std::vector<long long> operator()(long long n) { std::vector<long long> ret; while (n > 1) { long long f = find_factor(n); if (f < n) { auto tmp = operator()(f); ret.insert(ret.end(), tmp.begin(), tmp.end()); } else ret.push_back(n); n /= f; } std::sort(ret.begin(), ret.end()); return ret; } long long euler_phi(long long n) { long long ret = 1, last = -1; for (auto p : this->operator()(n)) ret *= p - (last != p), last = p; return ret; } } FactorizeLonglong; using namespace std; int main() { long long N; cin >> N; auto f = FactorizeLonglong(N); map<long long, int> mp; for (auto x : f) mp[x]++; long long ret = 1; for (auto [k, cnt] : mp) { // (use, max) vector dp(cnt + 1, vector<long long>(cnt + 1)); dp.at(0).at(1) = 1; for (int u = 0; u <= cnt; ++u) { for (int m = 1; m <= cnt; ++m) { for (int nm = m; u + nm <= cnt; ++nm) { dp.at(u + nm).at(nm) += dp.at(u).at(m); } } } ret *= accumulate(dp.back().begin(), dp.back().end(), 0LL); } cout << ret << '\n'; }