結果
問題 | No.1653 Squarefree |
ユーザー | KoD |
提出日時 | 2021-08-20 22:52:50 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,824 bytes |
コンパイル時間 | 3,275 ms |
コンパイル使用メモリ | 252,108 KB |
実行使用メモリ | 18,180 KB |
最終ジャッジ日時 | 2024-10-14 05:03:14 |
合計ジャッジ時間 | 15,920 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 421 ms
18,108 KB |
testcase_01 | AC | 30 ms
17,080 KB |
testcase_02 | AC | 35 ms
17,080 KB |
testcase_03 | AC | 29 ms
16,960 KB |
testcase_04 | AC | 29 ms
17,212 KB |
testcase_05 | AC | 29 ms
17,064 KB |
testcase_06 | AC | 30 ms
17,076 KB |
testcase_07 | AC | 30 ms
17,116 KB |
testcase_08 | AC | 34 ms
17,188 KB |
testcase_09 | AC | 30 ms
17,056 KB |
testcase_10 | AC | 31 ms
17,052 KB |
testcase_11 | AC | 130 ms
18,064 KB |
testcase_12 | AC | 130 ms
18,012 KB |
testcase_13 | AC | 418 ms
17,996 KB |
testcase_14 | AC | 417 ms
18,048 KB |
testcase_15 | AC | 420 ms
18,112 KB |
testcase_16 | AC | 420 ms
18,028 KB |
testcase_17 | AC | 422 ms
17,924 KB |
testcase_18 | AC | 421 ms
18,060 KB |
testcase_19 | AC | 421 ms
17,924 KB |
testcase_20 | AC | 420 ms
18,104 KB |
testcase_21 | AC | 421 ms
18,076 KB |
testcase_22 | AC | 422 ms
17,992 KB |
testcase_23 | AC | 416 ms
18,124 KB |
testcase_24 | AC | 419 ms
18,052 KB |
testcase_25 | AC | 417 ms
17,988 KB |
testcase_26 | AC | 413 ms
18,052 KB |
testcase_27 | AC | 424 ms
17,988 KB |
testcase_28 | AC | 419 ms
18,180 KB |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | AC | 417 ms
17,984 KB |
testcase_32 | AC | 423 ms
18,056 KB |
testcase_33 | AC | 419 ms
18,048 KB |
testcase_34 | AC | 421 ms
18,124 KB |
testcase_35 | AC | 418 ms
18,048 KB |
testcase_36 | AC | 30 ms
17,148 KB |
testcase_37 | WA | - |
testcase_38 | AC | 30 ms
17,048 KB |
testcase_39 | AC | 30 ms
17,068 KB |
testcase_40 | AC | 30 ms
17,040 KB |
ソースコード
#include <bits/stdc++.h> using i32 = std::int32_t; using u32 = std::uint32_t; using i64 = std::int64_t; using u64 = std::uint64_t; using i128 = __int128_t; using u128 = __uint128_t; using isize = std::ptrdiff_t; using usize = std::size_t; class rep { struct Iter { usize itr; constexpr Iter(const usize pos) noexcept : itr(pos) {} constexpr void operator++() noexcept { ++itr; } constexpr bool operator!=(const Iter& other) const noexcept { return itr != other.itr; } constexpr usize operator*() const noexcept { return itr; } }; const Iter first, last; public: explicit constexpr rep(const usize first, const usize last) noexcept : first(first), last(std::max(first, last)) {} constexpr Iter begin() const noexcept { return first; } constexpr Iter end() const noexcept { return last; } }; constexpr u64 ceil_log2(const u64 x) { u64 e = 0; while (((u64)1 << e) < x) ++e; return e; } template <class F> class AutoReallocation { using R = typename decltype(std::declval<F>()((usize)0))::value_type; F func; mutable std::vector<R> data; public: explicit AutoReallocation(F&& f) : func(std::forward<F>(f)), data() {} void reserve(const usize size) const { if (data.size() < size) data = func(((usize)1 << ceil_log2(size))); } R operator[](const usize i) const { reserve(i + 1); return data[i]; } }; template <class F> decltype(auto) auto_realloc(F&& f) { using G = std::decay_t<F>; return AutoReallocation<G>(std::forward<G>(f)); } struct PrimeSieve { static inline const auto min_prime = auto_realloc([](const usize n) { std::vector<usize> ret(n); std::iota(ret.begin(), ret.end(), (usize)0); std::vector<usize> list; for (const usize i : rep(2, n)) { if (ret[i] == i) list.push_back(i); for (const usize p : list) { if (p * i >= n || p > ret[i]) break; ret[p * i] = p; } } return ret; }); static bool is_prime(const usize n) { if (n <= 1) return false; return min_prime[n] == n; } template <class T> static std::vector<std::pair<T, usize>> factorize(T x) { assert(x > 0); std::vector<std::pair<T, usize>> ret; while (x != 1) { const usize p = min_prime[x]; ret.emplace_back((T)p, 0); while (min_prime[x] == p) { ret.back().second++; x /= p; } } return ret; } }; template <class T> using Vec = std::vector<T>; i64 isqrt(const i64 X) { if (X <= 1) { return X; } i64 ok = 0, ng = X; while (ng - ok > 1) { const i128 md = (ok + ng) / 2; (md * md > (i128)X ? ng : ok) = md; } return ok; } bool is_sq(const i64 x) { const i64 y = isqrt(x); return y != 1 and y * y == x; } void main_() { i64 L, R; std::cin >> L >> R; Vec<char> ok(R - L + 1, true); for (i64 k = 2; k <= 1000000; ++k) { if (!PrimeSieve::is_prime(k)) { continue; } const i64 x = k * k; for (i64 i = (L + x - 1) / x * x; i <= R; i += x) { ok[i - L] = false; } } for (i64 k = 1; k <= 1000000; ++k) { if (!PrimeSieve::is_prime(k)) { continue; } for (i64 i = (L + k - 1) / k * k; i <= R; i += k) { if (ok[i - L] and is_sq(i / k)) { ok[i - L] = false; } } } usize cnt = 0; for (const auto c : ok) { if (c) { cnt += 1; } } std::cout << cnt << '\n'; } int main() { std::ios_base::sync_with_stdio(false); std::cin.tie(nullptr); main_(); return 0; }