結果
| 問題 | No.2 素因数ゲーム |
| コンテスト | |
| ユーザー |
noshi91
|
| 提出日時 | 2019-09-20 22:40:53 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 5,000 ms |
| コード長 | 4,930 bytes |
| コンパイル時間 | 1,204 ms |
| コンパイル使用メモリ | 79,912 KB |
| 実行使用メモリ | 5,376 KB |
| 最終ジャッジ日時 | 2024-09-14 18:40:37 |
| 合計ジャッジ時間 | 1,718 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 31 |
ソースコード
//#define NDEBUG
#include <cstddef>
#include <cstdint>
#include <iostream>
#include <iterator>
#include <vector>
namespace n91 {
using i8 = std::int_fast8_t;
using i32 = std::int_fast32_t;
using i64 = std::int_fast64_t;
using u8 = std::uint_fast8_t;
using u32 = std::uint_fast32_t;
using u64 = std::uint_fast64_t;
using isize = std::ptrdiff_t;
using usize = std::size_t;
constexpr usize operator"" _z(unsigned long long x) noexcept {
return static_cast<usize>(x);
}
template <class T> class integral_iterator {
public:
using difference_type = T;
using value_type = T;
using pointer = const value_type *;
using reference = value_type;
using iterator_category = std::random_access_iterator_tag;
private:
using self_type = integral_iterator<value_type>;
value_type i;
public:
constexpr integral_iterator() noexcept : i() {}
explicit constexpr integral_iterator(const value_type i) noexcept : i(i) {}
constexpr self_type operator++(int) noexcept { return self_type(i++); }
constexpr self_type operator--(int) noexcept { return self_type(i--); }
constexpr self_type operator[](const difference_type rhs) const noexcept {
return self_type(i + rhs);
}
constexpr self_type &operator++() noexcept {
++i;
return *this;
}
constexpr self_type &operator--() noexcept {
--i;
return *this;
}
constexpr reference operator*() const noexcept { return i; }
constexpr self_type operator+(const difference_type rhs) const noexcept {
return self_type(i + rhs);
}
constexpr self_type operator-(const difference_type rhs) const noexcept {
return self_type(i - rhs);
}
constexpr difference_type operator-(const self_type rhs) const noexcept {
return i - rhs.i;
}
constexpr bool operator<(const self_type rhs) const noexcept {
return i < rhs.i;
}
constexpr bool operator<=(const self_type rhs) const noexcept {
return i <= rhs.i;
}
constexpr bool operator>(const self_type rhs) const noexcept {
return i > rhs.i;
}
constexpr bool operator>=(const self_type rhs) const noexcept {
return i >= rhs.i;
}
constexpr bool operator==(const self_type rhs) const noexcept {
return i == rhs.i;
}
constexpr bool operator!=(const self_type rhs) const noexcept {
return i != rhs.i;
}
constexpr self_type &operator+=(const difference_type rhs) noexcept {
i += rhs;
return *this;
}
constexpr self_type &operator-=(const difference_type rhs) noexcept {
i -= rhs;
return *this;
}
};
template <class T>
constexpr integral_iterator<T> make_int_itr(const T i) noexcept {
return integral_iterator<T>(i);
}
class rep {
const usize f, l;
public:
constexpr rep(const usize f, const usize l) noexcept : f(f), l(l) {}
constexpr auto begin() const noexcept { return make_int_itr(f); }
constexpr auto end() const noexcept { return make_int_itr(l); }
};
class revrep {
const usize f, l;
public:
revrep(const usize f, const usize l) noexcept : f(l), l(f) {}
auto begin() const noexcept {
return std::make_reverse_iterator(make_int_itr(f));
}
auto end() const noexcept {
return std::make_reverse_iterator(make_int_itr(l));
}
};
template <class T> auto md_vec(const usize n, const T &value) {
return std::vector<T>(n, value);
}
template <class... Args> auto md_vec(const usize n, Args... args) {
return std::vector<decltype(md_vec(args...))>(n, md_vec(args...));
}
template <class T> constexpr T difference(const T &a, const T &b) {
return a < b ? b - a : a - b;
}
template <class T> T scan() {
T ret;
std::cin >> ret;
return ret;
}
} // namespace n91
#include <utility>
#include <vector>
namespace n91 {
template <class T> std::vector<T> factorize(T n) noexcept {
std::vector<T> ret;
for (T p = static_cast<T>(2); p * p <= n; ++p) {
while (n % p == static_cast<T>(0)) {
n /= p;
ret.push_back(p);
}
}
if (n != static_cast<T>(1)) {
ret.push_back(std::move(n));
}
ret.shrink_to_fit();
return std::move(ret);
}
} // namespace n91
#include <utility>
#include <vector>
namespace n91 {
template <class T>
std::vector<std::pair<T, std::size_t>>
run_length_encoding(const std::vector<T> &a) {
if (a.empty()) {
return std::vector<std::pair<T, std::size_t>>();
}
std::vector<std::pair<T, std::size_t>> ret;
ret.reserve(a.size());
ret.emplace_back(a.front(), static_cast<std::size_t>(0));
for (const T &e : a) {
if (e != ret.back().first) {
ret.emplace_back(e, static_cast<std::size_t>(0));
}
++ret.back().second;
}
ret.shrink_to_fit();
return std::move(ret);
}
} // namespace n91
#include <algorithm>
#include <iostream>
#include <utility>
namespace n91 {
void main_() {
usize g = 0_z;
for (const auto &e : run_length_encoding(factorize(scan<u64>()))) {
g ^= e.second;
}
std::cout << (g != 0_z ? "Alice" : "Bob") << std::endl;
}
} // namespace n91
int main() {
n91::main_();
return 0;
}
noshi91