結果
問題 | No.947 ABC包囲網 |
ユーザー | Pachicobue |
提出日時 | 2019-12-10 00:48:20 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,022 ms / 2,000 ms |
コード長 | 5,821 bytes |
コンパイル時間 | 2,752 ms |
コンパイル使用メモリ | 218,532 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-06-23 10:49:29 |
合計ジャッジ時間 | 26,564 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
6,816 KB |
testcase_01 | AC | 1 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 1 ms
6,940 KB |
testcase_04 | AC | 1 ms
6,944 KB |
testcase_05 | AC | 1 ms
6,944 KB |
testcase_06 | AC | 1 ms
6,944 KB |
testcase_07 | AC | 2 ms
6,944 KB |
testcase_08 | AC | 1 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | AC | 2 ms
6,944 KB |
testcase_11 | AC | 2 ms
6,944 KB |
testcase_12 | AC | 2 ms
6,940 KB |
testcase_13 | AC | 2 ms
6,940 KB |
testcase_14 | AC | 2 ms
6,944 KB |
testcase_15 | AC | 5 ms
6,944 KB |
testcase_16 | AC | 3 ms
6,940 KB |
testcase_17 | AC | 3 ms
6,940 KB |
testcase_18 | AC | 4 ms
6,940 KB |
testcase_19 | AC | 4 ms
6,944 KB |
testcase_20 | AC | 5 ms
6,940 KB |
testcase_21 | AC | 4 ms
6,940 KB |
testcase_22 | AC | 5 ms
6,944 KB |
testcase_23 | AC | 4 ms
6,944 KB |
testcase_24 | AC | 4 ms
6,944 KB |
testcase_25 | AC | 4 ms
6,940 KB |
testcase_26 | AC | 4 ms
6,944 KB |
testcase_27 | AC | 4 ms
6,944 KB |
testcase_28 | AC | 707 ms
6,940 KB |
testcase_29 | AC | 926 ms
6,940 KB |
testcase_30 | AC | 762 ms
6,940 KB |
testcase_31 | AC | 995 ms
6,944 KB |
testcase_32 | AC | 1,019 ms
6,944 KB |
testcase_33 | AC | 1,004 ms
6,944 KB |
testcase_34 | AC | 1,009 ms
6,944 KB |
testcase_35 | AC | 1,022 ms
6,940 KB |
testcase_36 | AC | 999 ms
6,940 KB |
testcase_37 | AC | 1,001 ms
6,944 KB |
testcase_38 | AC | 1,000 ms
6,944 KB |
testcase_39 | AC | 1,015 ms
6,944 KB |
testcase_40 | AC | 996 ms
6,944 KB |
testcase_41 | AC | 996 ms
6,944 KB |
testcase_42 | AC | 994 ms
6,944 KB |
testcase_43 | AC | 1,006 ms
6,940 KB |
testcase_44 | AC | 1,002 ms
6,944 KB |
testcase_45 | AC | 987 ms
6,940 KB |
testcase_46 | AC | 997 ms
6,940 KB |
testcase_47 | AC | 1,002 ms
6,944 KB |
testcase_48 | AC | 989 ms
6,944 KB |
testcase_49 | AC | 1,006 ms
6,940 KB |
testcase_50 | AC | 994 ms
6,944 KB |
testcase_51 | AC | 2 ms
6,944 KB |
testcase_52 | AC | 2 ms
6,940 KB |
testcase_53 | AC | 2 ms
6,940 KB |
testcase_54 | AC | 2 ms
6,940 KB |
testcase_55 | AC | 1 ms
6,944 KB |
testcase_56 | AC | 2 ms
6,940 KB |
testcase_57 | AC | 6 ms
6,944 KB |
testcase_58 | AC | 5 ms
6,940 KB |
testcase_59 | AC | 6 ms
6,940 KB |
ソースコード
#include <bits/stdc++.h> // created [2019/12/10] 00:00:12 #pragma GCC diagnostic ignored "-Wsign-compare" #pragma GCC diagnostic ignored "-Wsign-conversion" using i32 = int32_t; using i64 = int64_t; using u32 = uint32_t; using u64 = uint64_t; using uint = unsigned int; using usize = std::size_t; using ll = long long; using ull = unsigned long long; using ld = long double; template<typename T, usize n> using arr = T (&)[n]; template<typename T, usize n> using c_arr = const T (&)[n]; template<typename T> constexpr T popcount(const T u) { return u ? static_cast<T>(__builtin_popcountll(static_cast<u64>(u))) : static_cast<T>(0); } template<typename T> constexpr T log2p1(const T u) { return u ? static_cast<T>(64 - __builtin_clzll(static_cast<u64>(u))) : static_cast<T>(0); } template<typename T> constexpr T msbp1(const T u) { return log2p1(u); } template<typename T> constexpr T lsbp1(const T u) { return __builtin_ffsll(u); } template<typename T> constexpr T clog(const T u) { return u ? log2p1(u - 1) : static_cast<T>(u); } template<typename T> constexpr bool ispow2(const T u) { return u and (static_cast<u64>(u) & static_cast<u64>(u - 1)) == 0; } template<typename T> constexpr T ceil2(const T u) { return static_cast<T>(1) << clog(u); } template<typename T> constexpr T floor2(const T u) { return u == 0 ? static_cast<T>(0) : static_cast<T>(1) << (log2p1(u) - 1); } template<typename T> constexpr bool btest(const T mask, const usize ind) { return static_cast<bool>((static_cast<u64>(mask) >> ind) & static_cast<u64>(1)); } template<typename T> void bset(T& mask, const usize ind) { mask |= (static_cast<T>(1) << ind); } template<typename T> void breset(T& mask, const usize ind) { mask &= ~(static_cast<T>(1) << ind); } template<typename T> void bflip(T& mask, const usize ind) { mask ^= (static_cast<T>(1) << ind); } template<typename T> void bset(T& mask, const usize ind, const bool b) { (b ? bset(mask, ind) : breset(mask, ind)); } template<typename T> constexpr T bcut(const T mask, const usize ind) { return ind == 0 ? static_cast<T>(0) : static_cast<T>((static_cast<u64>(mask) << (64 - ind)) >> (64 - ind)); } template<typename T> bool chmin(T& a, const T& b) { return (a > b ? a = b, true : false); } template<typename T> bool chmax(T& a, const T& b) { return (a < b ? a = b, true : false); } constexpr unsigned int mod = 1000000007; template<typename T> constexpr T inf_v = std::numeric_limits<T>::max() / 4; template<typename Real> constexpr Real pi_v = Real{3.141592653589793238462643383279502884}; template<typename T> T in() { T v; return std::cin >> v, v; } template<typename T, typename Uint, usize n, usize i> T in_v(typename std::enable_if<(i == n), c_arr<Uint, n>>::type) { return in<T>(); } template<typename T, typename Uint, usize n, usize i> auto in_v(typename std::enable_if<(i < n), c_arr<Uint, n>>::type& szs) { const usize s = (usize)szs[i]; std::vector<decltype(in_v<T, Uint, n, i + 1>(szs))> ans(s); for (usize j = 0; j < s; j++) { ans[j] = in_v<T, Uint, n, i + 1>(szs); } return ans; } template<typename T, typename Uint, usize n> auto in_v(c_arr<Uint, n> szs) { return in_v<T, Uint, n, 0>(szs); } template<typename... Types> auto in_t() { return std::tuple<std::decay_t<Types>...>{in<Types>()...}; } template<typename T> void out(const T& v) { std::cout << v << '\n'; } // Reactiveではstd::flushを忘れない template<typename T, typename... Args> void out(const T& v, const Args... args) { std::cout << v << ' ', out(args...); } # define SHOW(...) static_cast<void>(0) constexpr ull TEN(const usize n) { return n == 0 ? 1ULL : TEN(n - 1) * 10ULL; } template<typename T, typename Uint, usize n, usize i> auto make_v(typename std::enable_if<(i == n), c_arr<Uint, n>>::type, const T& v = T{}) { return v; } template<typename T, typename Uint, usize n, usize i> auto make_v(typename std::enable_if<(i < n), c_arr<Uint, n>>::type szs, const T& v = T{}) { const usize s = (usize)szs[i]; return std::vector<decltype(make_v<T, n, i + 1>(szs, v))>(s, make_v<T, n, i + 1>(szs, v)); } template<typename T, typename Uint, usize n> auto make_v(c_arr<Uint, n> szs, const T& t = T{}) { return make_v<T, Uint, n, 0>(szs, t); } int main() { int n = in<int>(); std::vector<ll> xs, ys; for (int i = 0; i < n; i++) { const auto [x, y] = in_t<ll, ll>(); if (x == 0 and y == 0) { continue; } xs.push_back(x), ys.push_back(y); } n = xs.size(); struct Q { ll first, second; }; struct C { bool operator()(const Q& q1, const Q& q2) const { auto pos = [](const ll x, const ll y) { // 象限 if (x >= 0 and y >= 0) { return 1; } if (x < 0 and y >= 0) { return 2; } if (x < 0 and y < 0) { return 3; } if (x >= 0 and y < 0) { return 4; } return 0; }; const auto [x1, y1] = q1; const int p1 = pos(x1, y1); const auto [x2, y2] = q2; const int p2 = pos(x2, y2); if (p1 != p2) { return p1 < p2; } return y1 * x2 < y2 * x1; } }; std::vector<Q> ss(n); for (int i = 0; i < n; i++) { ss[i] = {xs[i], ys[i]}; } std::sort(ss.begin(), ss.end(), C{}); ll ans = 0; for (int i = 0; i < n; i++) { for (int j = i + 1; j < n; j++) { Q si = ss[i], sj = ss[j]; si.first *= -1LL, si.second *= -1LL; sj.first *= -1LL, sj.second *= -1LL; std::tie(si, sj) = std::minmax(si, sj, C{}); ans += std::max(0L, std::lower_bound(ss.begin(), ss.end(), sj, C{}) - std::upper_bound(ss.begin(), ss.end(), si, C{})); } } std::cout << ans << std::endl; return 0; }