結果
問題 | No.1444 !Andd |
ユーザー |
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提出日時 | 2021-03-26 23:10:24 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 108 ms / 2,000 ms |
コード長 | 2,752 bytes |
コンパイル時間 | 2,749 ms |
コンパイル使用メモリ | 193,968 KB |
最終ジャッジ日時 | 2025-01-19 23:30:10 |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 20 |
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; } }; template <class T> using Vec = std::vector<T>; constexpr usize SIZE = 1 << 10; void G_main() { usize N; std::cin >> N; Vec<u32> A(N); for (auto &x: A) { std::cin >> x; } std::array<bool, SIZE> from_and{}; std::array<bool, SIZE> from_mult{}; std::array<bool, SIZE> can{}; usize certain = 0; from_and[1] = from_mult[1] = can[1] = true; for (const auto x: A) { { std::array<bool, SIZE> next{}; for (auto i: rep(0, SIZE)) { if (can[i]) { next[i & x] = true; } } from_and = std::move(next); } { std::array<bool, SIZE> next{}; for (auto i: rep(0, SIZE)) { if (can[i]) { next[(i * x) & (SIZE - 1)] = true; next[i & x] = true; } } can = std::move(next); } usize ans = 0; { if (x == 0) { certain = 0; } std::array<bool, SIZE> next{}; for (auto i: rep(0, SIZE)) { if (from_mult[i]) { const auto j = i * x; if (j > SIZE) { certain += 1; } else if (!from_and[j]) { ans += 1; next[j] = true; } } } ans += certain; from_mult = std::move(next); } for (auto i: rep(0, SIZE)) { if (from_and[i]) { ans += 1; from_mult[i] = true; } } std::cout << ans << '\n'; } return; } int main() { std::ios_base::sync_with_stdio(false); std::cin.tie(nullptr); G_main(); return 0; }