結果
問題 | No.955 ax^2+bx+c=0 |
ユーザー | Pachicobue |
提出日時 | 2019-12-18 00:24:37 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 3 ms / 2,000 ms |
コード長 | 6,123 bytes |
コンパイル時間 | 3,124 ms |
コンパイル使用メモリ | 206,608 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-09-18 21:58:24 |
合計ジャッジ時間 | 5,633 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
(要ログイン)
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
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 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 | AC | 3 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 2 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 2 ms
5,376 KB |
testcase_29 | AC | 2 ms
5,376 KB |
testcase_30 | AC | 2 ms
5,376 KB |
testcase_31 | AC | 2 ms
5,376 KB |
testcase_32 | AC | 2 ms
5,376 KB |
testcase_33 | AC | 2 ms
5,376 KB |
testcase_34 | AC | 2 ms
5,376 KB |
testcase_35 | AC | 2 ms
5,376 KB |
testcase_36 | AC | 2 ms
5,376 KB |
testcase_37 | AC | 2 ms
5,376 KB |
testcase_38 | AC | 2 ms
5,376 KB |
testcase_39 | AC | 2 ms
5,376 KB |
testcase_40 | AC | 2 ms
5,376 KB |
testcase_41 | AC | 3 ms
5,376 KB |
testcase_42 | AC | 2 ms
5,376 KB |
testcase_43 | AC | 2 ms
5,376 KB |
testcase_44 | AC | 2 ms
5,376 KB |
testcase_45 | AC | 2 ms
5,376 KB |
testcase_46 | AC | 2 ms
5,376 KB |
testcase_47 | AC | 2 ms
5,376 KB |
testcase_48 | AC | 2 ms
5,376 KB |
testcase_49 | AC | 2 ms
5,376 KB |
testcase_50 | AC | 2 ms
5,376 KB |
testcase_51 | AC | 2 ms
5,376 KB |
testcase_52 | AC | 2 ms
5,376 KB |
testcase_53 | AC | 2 ms
5,376 KB |
testcase_54 | AC | 2 ms
5,376 KB |
testcase_55 | AC | 2 ms
5,376 KB |
testcase_56 | AC | 2 ms
5,376 KB |
testcase_57 | AC | 2 ms
5,376 KB |
testcase_58 | AC | 2 ms
5,376 KB |
testcase_59 | AC | 2 ms
5,376 KB |
testcase_60 | AC | 3 ms
5,376 KB |
testcase_61 | AC | 2 ms
5,376 KB |
testcase_62 | AC | 2 ms
5,376 KB |
testcase_63 | AC | 2 ms
5,376 KB |
testcase_64 | AC | 2 ms
5,376 KB |
testcase_65 | AC | 2 ms
5,376 KB |
testcase_66 | AC | 2 ms
5,376 KB |
testcase_67 | AC | 2 ms
5,376 KB |
testcase_68 | AC | 2 ms
5,376 KB |
testcase_69 | AC | 2 ms
5,376 KB |
testcase_70 | AC | 2 ms
5,376 KB |
testcase_71 | AC | 2 ms
5,376 KB |
testcase_72 | AC | 2 ms
5,376 KB |
testcase_73 | AC | 2 ms
5,376 KB |
testcase_74 | AC | 2 ms
5,376 KB |
testcase_75 | AC | 2 ms
5,376 KB |
testcase_76 | AC | 2 ms
5,376 KB |
testcase_77 | AC | 2 ms
5,376 KB |
testcase_78 | AC | 2 ms
5,376 KB |
testcase_79 | AC | 2 ms
5,376 KB |
testcase_80 | AC | 2 ms
5,376 KB |
testcase_81 | AC | 2 ms
5,376 KB |
testcase_82 | AC | 2 ms
5,376 KB |
testcase_83 | AC | 2 ms
5,376 KB |
testcase_84 | AC | 2 ms
5,376 KB |
testcase_85 | AC | 2 ms
5,376 KB |
testcase_86 | AC | 2 ms
5,376 KB |
testcase_87 | AC | 2 ms
5,376 KB |
testcase_88 | AC | 2 ms
5,376 KB |
testcase_89 | AC | 2 ms
5,376 KB |
testcase_90 | AC | 2 ms
5,376 KB |
testcase_91 | AC | 2 ms
5,376 KB |
testcase_92 | AC | 2 ms
5,376 KB |
testcase_93 | AC | 3 ms
5,376 KB |
testcase_94 | AC | 2 ms
5,376 KB |
testcase_95 | AC | 2 ms
5,376 KB |
testcase_96 | AC | 2 ms
5,376 KB |
testcase_97 | AC | 2 ms
5,376 KB |
testcase_98 | AC | 2 ms
5,376 KB |
testcase_99 | AC | 2 ms
5,376 KB |
testcase_100 | AC | 2 ms
5,376 KB |
testcase_101 | AC | 2 ms
5,376 KB |
testcase_102 | AC | 2 ms
5,376 KB |
testcase_103 | AC | 2 ms
5,376 KB |
testcase_104 | AC | 2 ms
5,376 KB |
testcase_105 | AC | 2 ms
5,376 KB |
testcase_106 | AC | 2 ms
5,376 KB |
testcase_107 | AC | 2 ms
5,376 KB |
testcase_108 | AC | 2 ms
5,376 KB |
testcase_109 | AC | 2 ms
5,376 KB |
testcase_110 | AC | 2 ms
5,376 KB |
testcase_111 | AC | 2 ms
5,376 KB |
testcase_112 | AC | 2 ms
5,376 KB |
testcase_113 | AC | 2 ms
5,376 KB |
testcase_114 | AC | 2 ms
5,376 KB |
testcase_115 | AC | 2 ms
5,376 KB |
testcase_116 | AC | 2 ms
5,376 KB |
testcase_117 | AC | 2 ms
5,376 KB |
testcase_118 | AC | 2 ms
5,376 KB |
testcase_119 | AC | 2 ms
5,376 KB |
testcase_120 | AC | 2 ms
5,376 KB |
testcase_121 | AC | 2 ms
5,376 KB |
testcase_122 | AC | 2 ms
5,376 KB |
testcase_123 | AC | 2 ms
5,376 KB |
testcase_124 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> // created [2019/12/18] 00:09:13 #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}; auto mfp = [](auto&& f) { return [=](auto&&... args) { return f(f, std::forward<decltype(args)>(args)...); }; }; 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>()...}; } struct io_init { io_init() { std::cin.tie(nullptr), std::ios::sync_with_stdio(false); std::cout << std::fixed << std::setprecision(20); } } hogechan; template<typename T> int out(const T& v) { return std::cout << v, 0; } template<typename T> int out(const std::vector<T>& v) { for (usize i = 0; i < v.size(); i++) { if (i > 0) { std::cout << ' '; } out(v[i]); } return std::cout << "\n", 0; } template<typename T1, typename T2> int out(const std::pair<T1, T2>& v) { return out(v.first), std::cout << ' ', out(v.second), 0; } template<typename T, typename... Args> int out(const T& v, const Args... args) { return out(v), std::cout << ' ', out(args...), 0; } template<typename... Args> int outln(const Args... args) { return out(args...), std::cout << '\n', 0; } template<typename... Args> void outel(const Args... args) { return out(args...), std::cout << std::endl, 0; } # 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, Uint, n, i + 1>(szs, v))>(s, make_v<T, Uint, 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() { const auto [A, B, C] = in_t<ll, ll, ll>(); const auto [a, b, c] = std::tuple<ld, ld, ld>(A, B, C); if (A == 0) { if (B == 0) { if (C == 0) { return outln(-1); } else { return outln(0); } } else { outln(1); return outln(-c / b); } } else { const ll D = B * B - 4LL * A * C; const ld d = D; if (D < 0) { return outln(0); } else if (D == 0) { outln(1); return outln(-b / (2 * a)); } else { const ld s = std::sqrt(d); constexpr ld eps = 1e-5; outln(2); ld x1 = (-b + s) / (2 * a); if (std::abs(-b + s) < eps) { x1 = 2 * c / (-s - b); } ld x2 = (-b - std::sqrt(d)) / (2 * a); if (std::abs(-b - s) < eps) { x2 = 2 * c / (s - b); } if (x1 > x2) { std::swap(x1, x2); } outln(x1); return outln(x2); } } return 0; }