結果
問題 | No.1701 half price |
ユーザー | kkishi |
提出日時 | 2021-10-08 22:02:17 |
言語 | C++17(clang) (17.0.6 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 7,353 bytes |
コンパイル時間 | 6,818 ms |
コンパイル使用メモリ | 163,972 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-07-23 04:16:27 |
合計ジャッジ時間 | 3,531 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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
5,248 KB |
testcase_02 | AC | 14 ms
5,248 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 15 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 129 ms
5,376 KB |
testcase_07 | AC | 129 ms
5,376 KB |
testcase_08 | WA | - |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 1 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 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | AC | 1 ms
5,376 KB |
testcase_21 | AC | 129 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> #include <boost/hana/functional/fix.hpp> template <typename T, typename = void> struct is_dereferenceable : std::false_type {}; template <typename T> struct is_dereferenceable<T, std::void_t<decltype(*std::declval<T>())>> : std::true_type {}; template <typename T, typename = void> struct is_iterable : std::false_type {}; template <typename T> struct is_iterable<T, std::void_t<decltype(std::begin(std::declval<T>())), decltype(std::end(std::declval<T>()))>> : std::true_type {}; template <typename T, typename = void> struct is_applicable : std::false_type {}; template <typename T> struct is_applicable<T, std::void_t<decltype(std::tuple_size<T>::value)>> : std::true_type {}; template <typename T, typename... Ts> void debug(const T& value, const Ts&... args); template <typename T> void debug(const T& v) { if constexpr (is_dereferenceable<T>::value) { std::cerr << "{"; if (v) { debug(*v); } else { std::cerr << "nil"; } std::cerr << "}"; } else if constexpr (is_iterable<T>::value && !std::is_same<T, std::string>::value) { std::cerr << "{"; for (auto it = std::begin(v); it != std::end(v); ++it) { if (it != std::begin(v)) std::cerr << ", "; debug(*it); } std::cerr << "}"; } else if constexpr (is_applicable<T>::value) { std::cerr << "{"; std::apply([](const auto&... args) { debug(args...); }, v); std::cerr << "}"; } else { std::cerr << v; } } template <typename T, typename... Ts> void debug(const T& value, const Ts&... args) { debug(value); std::cerr << ", "; debug(args...); } #if DEBUG #define dbg(...) \ do { \ cerr << #__VA_ARGS__ << ": "; \ debug(__VA_ARGS__); \ cerr << " (L" << __LINE__ << ")\n"; \ } while (0) #else #define dbg(...) #endif void read_from_cin() {} template <typename T, typename... Ts> void read_from_cin(T& value, Ts&... args) { std::cin >> value; read_from_cin(args...); } #define rd(type, ...) \ type __VA_ARGS__; \ read_from_cin(__VA_ARGS__); #define ints(...) rd(int, __VA_ARGS__); #define strings(...) rd(string, __VA_ARGS__); // Strings used for yes/no questions. Defined as variables so that it can be // adjusted for each contest site. const char *yes_str = "Yes", *no_str = "No"; template <typename T> void write_to_cout(const T& value) { if constexpr (std::is_same<T, bool>::value) { std::cout << (value ? yes_str : no_str); } else if constexpr (is_iterable<T>::value && !std::is_same<T, std::string>::value) { for (auto it = std::begin(value); it != std::end(value); ++it) { if (it != std::begin(value)) std::cout << " "; std::cout << *it; } } else { std::cout << value; } } template <typename T, typename... Ts> void write_to_cout(const T& value, const Ts&... args) { write_to_cout(value); std::cout << ' '; write_to_cout(args...); } #define wt(...) \ do { \ write_to_cout(__VA_ARGS__); \ cout << '\n'; \ } while (0) #define all(x) (x).begin(), (x).end() #define eb(...) emplace_back(__VA_ARGS__) #define pb(...) push_back(__VA_ARGS__) #define dispatch(_1, _2, _3, name, ...) name #define as_i64(x) \ ( \ [] { \ static_assert( \ std::is_integral< \ typename std::remove_reference<decltype(x)>::type>::value, \ "rep macro supports std integral types only"); \ }, \ static_cast<int64_t>(x)) #define rep3(i, a, b) for (int64_t i = as_i64(a); i < as_i64(b); ++i) #define rep2(i, n) rep3(i, 0, n) #define rep1(n) rep2(_loop_variable_, n) #define rep(...) dispatch(__VA_ARGS__, rep3, rep2, rep1)(__VA_ARGS__) #define rrep3(i, a, b) for (int64_t i = as_i64(b) - 1; i >= as_i64(a); --i) #define rrep2(i, n) rrep3(i, 0, n) #define rrep1(n) rrep2(_loop_variable_, n) #define rrep(...) dispatch(__VA_ARGS__, rrep3, rrep2, rrep1)(__VA_ARGS__) #define each3(k, v, c) for (auto&& [k, v] : c) #define each2(e, c) for (auto&& e : c) #define each(...) dispatch(__VA_ARGS__, each3, each2)(__VA_ARGS__) template <typename T> std::istream& operator>>(std::istream& is, std::vector<T>& v) { for (T& vi : v) is >> vi; return is; } template <typename T, typename U> std::istream& operator>>(std::istream& is, std::pair<T, U>& p) { is >> p.first >> p.second; return is; } template <typename T, typename U> bool chmax(T& a, U b) { if (a < b) { a = b; return true; } return false; } template <typename T, typename U> bool chmin(T& a, U b) { if (a > b) { a = b; return true; } return false; } template <typename T, typename U> auto max(T a, U b) { return a > b ? a : b; } template <typename T, typename U> auto min(T a, U b) { return a < b ? a : b; } template <typename T> int64_t sz(const T& v) { return std::size(v); } template <typename T> int64_t popcount(T i) { return std::bitset<std::numeric_limits<T>::digits>(i).count(); } template <typename T> bool hasbit(T s, int i) { return std::bitset<std::numeric_limits<T>::digits>(s)[i]; } template <typename T, typename U> auto div_floor(T n, U d) { if (d < 0) { n = -n; d = -d; } if (n < 0) { return -((-n + d - 1) / d); } return n / d; }; template <typename T, typename U> auto div_ceil(T n, U d) { if (d < 0) { n = -n; d = -d; } if (n < 0) { return -(-n / d); } return (n + d - 1) / d; } template <typename T> bool even(T x) { return x % 2 == 0; } std::array<std::pair<int64_t, int64_t>, 4> adjacent(int64_t i, int64_t j) { return {{{i + 1, j}, {i, j + 1}, {i - 1, j}, {i, j - 1}}}; } bool inside(int64_t i, int64_t j, int64_t I, int64_t J) { return 0 <= i && i < I && 0 <= j && j < J; } // big = 2305843009213693951 = 2^61-1 ~= 2.3*10^18 const int64_t big = std::numeric_limits<int64_t>::max() / 4; using i64 = int64_t; using i32 = int32_t; template <typename T> using low_priority_queue = std::priority_queue<T, std::vector<T>, std::greater<T>>; template <typename T> using V = std::vector<T>; template <typename T> using VV = V<V<T>>; void Main(); int main() { std::ios_base::sync_with_stdio(false); std::cin.tie(NULL); std::cout << std::fixed << std::setprecision(20); Main(); return 0; } const auto& Fix = boost::hana::fix; using namespace std; #define int i64 void Main() { ints(n, w); V<int> a(n); cin >> a; int ans = 0; rep(mask, 1 << n) { bool ok = false; for (int sub = mask;; sub = (sub - 1) & mask) { int sum = 0; rep(i, n) { if (hasbit(sub, i)) { sum += a[i] / 2; } else if (hasbit(mask, i)) { sum += a[i]; } } if (sum == w) { dbg(mask, sub, sum, w); } if (sum == w) ok = true; if (sub == 0) break; } if (ok) ++ans; } wt(ans); }