結果
問題 | No.955 ax^2+bx+c=0 |
ユーザー | opt |
提出日時 | 2021-01-03 19:32:23 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 5,223 bytes |
コンパイル時間 | 2,289 ms |
コンパイル使用メモリ | 201,976 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-13 13:25:13 |
合計ジャッジ時間 | 4,438 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 |
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testcase_00 | AC | 1 ms
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testcase_01 | AC | 2 ms
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testcase_02 | AC | 2 ms
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testcase_03 | AC | 2 ms
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testcase_04 | AC | 1 ms
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testcase_05 | AC | 2 ms
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testcase_06 | AC | 2 ms
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testcase_07 | AC | 2 ms
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testcase_08 | AC | 2 ms
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testcase_09 | AC | 2 ms
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testcase_10 | AC | 2 ms
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testcase_11 | AC | 1 ms
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testcase_12 | AC | 2 ms
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testcase_13 | AC | 2 ms
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testcase_14 | AC | 2 ms
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testcase_15 | AC | 1 ms
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testcase_16 | AC | 1 ms
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testcase_17 | AC | 2 ms
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testcase_18 | AC | 2 ms
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testcase_19 | AC | 2 ms
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testcase_20 | AC | 2 ms
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testcase_21 | AC | 2 ms
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testcase_22 | AC | 2 ms
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testcase_23 | AC | 2 ms
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testcase_24 | AC | 2 ms
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testcase_25 | AC | 2 ms
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testcase_26 | AC | 2 ms
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testcase_27 | AC | 2 ms
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testcase_28 | AC | 2 ms
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testcase_29 | AC | 1 ms
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testcase_30 | AC | 2 ms
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testcase_31 | AC | 2 ms
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testcase_32 | AC | 2 ms
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testcase_33 | AC | 2 ms
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testcase_34 | AC | 2 ms
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testcase_35 | AC | 2 ms
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testcase_36 | AC | 2 ms
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testcase_37 | AC | 2 ms
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testcase_38 | AC | 2 ms
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testcase_39 | AC | 1 ms
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testcase_40 | AC | 1 ms
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testcase_41 | AC | 1 ms
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testcase_42 | AC | 2 ms
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testcase_44 | AC | 2 ms
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testcase_45 | AC | 1 ms
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testcase_46 | AC | 2 ms
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testcase_47 | AC | 1 ms
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testcase_48 | AC | 2 ms
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testcase_49 | AC | 2 ms
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testcase_50 | AC | 1 ms
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testcase_51 | AC | 2 ms
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testcase_52 | AC | 2 ms
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testcase_53 | AC | 2 ms
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testcase_54 | AC | 1 ms
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testcase_55 | AC | 1 ms
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testcase_56 | AC | 1 ms
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testcase_57 | AC | 2 ms
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testcase_58 | AC | 2 ms
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testcase_59 | AC | 1 ms
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testcase_60 | AC | 2 ms
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testcase_61 | AC | 2 ms
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testcase_62 | AC | 2 ms
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testcase_63 | AC | 2 ms
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testcase_64 | AC | 2 ms
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testcase_65 | AC | 1 ms
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testcase_66 | AC | 1 ms
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testcase_67 | AC | 2 ms
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testcase_68 | AC | 2 ms
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testcase_69 | AC | 2 ms
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testcase_70 | AC | 1 ms
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testcase_71 | AC | 1 ms
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testcase_72 | AC | 1 ms
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testcase_73 | AC | 1 ms
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testcase_74 | AC | 2 ms
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testcase_75 | AC | 2 ms
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testcase_76 | AC | 2 ms
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testcase_77 | AC | 2 ms
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testcase_78 | AC | 2 ms
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testcase_79 | AC | 2 ms
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testcase_80 | AC | 1 ms
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testcase_81 | AC | 1 ms
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testcase_82 | AC | 1 ms
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testcase_83 | AC | 2 ms
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testcase_84 | AC | 1 ms
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testcase_85 | AC | 1 ms
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testcase_86 | AC | 1 ms
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testcase_87 | AC | 2 ms
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testcase_88 | AC | 1 ms
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testcase_89 | AC | 2 ms
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testcase_90 | AC | 1 ms
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testcase_91 | AC | 2 ms
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testcase_92 | AC | 2 ms
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testcase_93 | AC | 2 ms
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testcase_94 | AC | 2 ms
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testcase_95 | AC | 2 ms
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testcase_96 | AC | 2 ms
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testcase_97 | AC | 2 ms
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testcase_98 | AC | 2 ms
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testcase_99 | AC | 2 ms
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testcase_100 | AC | 2 ms
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testcase_101 | AC | 2 ms
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testcase_102 | AC | 2 ms
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testcase_103 | AC | 2 ms
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testcase_104 | AC | 2 ms
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testcase_105 | AC | 2 ms
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testcase_106 | AC | 2 ms
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testcase_107 | AC | 2 ms
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testcase_108 | AC | 2 ms
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testcase_109 | AC | 1 ms
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testcase_110 | AC | 2 ms
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testcase_111 | AC | 2 ms
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testcase_112 | AC | 1 ms
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testcase_113 | AC | 2 ms
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testcase_114 | AC | 2 ms
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testcase_115 | AC | 2 ms
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testcase_116 | AC | 2 ms
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testcase_117 | AC | 1 ms
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testcase_118 | AC | 1 ms
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testcase_119 | AC | 2 ms
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testcase_120 | AC | 1 ms
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testcase_121 | AC | 2 ms
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testcase_122 | AC | 2 ms
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testcase_123 | WA | - |
testcase_124 | WA | - |
ソースコード
#include <bits/stdc++.h> using namespace std; // #include <atcoder/all> // using namespace atcoder; // // input and output of modint // istream &operator>>(istream &is, modint998244353 &a) { long long v; is >> v; a = v; return is; } // ostream &operator<<(ostream &os, const modint998244353 &a) { return os << a.val(); } // istream &operator>>(istream &is, modint1000000007 &a) { long long v; is >> v; a = v; return is; } // ostream &operator<<(ostream &os, const modint1000000007 &a) { return os << a.val(); } // template<int m> istream &operator>>(istream &is, static_modint<m> &a) { long long v; is >> v; a = v; return is; } // template<int m> ostream &operator<<(ostream &os, const static_modint<m> &a) { return os << a.val(); } // template<int m> istream &operator>>(istream &is, dynamic_modint<m> &a) { long long v; is >> v; a = v; return is; } // template<int m> ostream &operator<<(ostream &os, const dynamic_modint<m> &a) { return os << a.val(); } #define rep2(i, m, n) for (int i = (m); i < (n); ++i) #define rep(i, n) rep2(i, 0, n) #define drep2(i, m, n) for (int i = (m)-1; i >= (n); --i) #define drep(i, n) drep2(i, n, 0) #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() #ifdef LOCAL void debug_out() { cerr << endl; } template <class Head, class... Tail> void debug_out(Head H, Tail... T) { cerr << '\n' << H; debug_out(T...); } #define debug(...) cerr << 'L' << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__) #define dump(x) cerr << 'L' << __LINE__ << " " << #x << " = " << (x) << endl #else #define debug(...) (void(0)) #define dump(x) (void(0)) #endif template<class T> using V = vector<T>; using ll = long long; using ld = long double; using Vi = V<int>; using VVi = V<Vi>; using Vl = V<ll>; using VVl = V<Vl>; using Vd = V<ld>; using VVd = V<Vd>; using Vb = V<bool>; using VVb = V<Vb>; template<class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>; template<class T> vector<T> make_vec(size_t n, T a) { return vector<T>(n, a); } template<class... Ts> auto make_vec(size_t n, Ts... ts) { return vector<decltype(make_vec(ts...))>(n, make_vec(ts...)); } template<class T> inline int sz(const T &x) { return size(x); } template<class T> inline bool chmin(T &a, const T b) { if (a > b) { a = b; return true; } return false; } template<class T> inline bool chmax(T &a, const T b) { if (a < b) { a = b; return true; } return false; } template<class T1, class T2> istream &operator>>(istream &is, pair<T1, T2> &p) { is >> p.first >> p.second; return is; } template<class T1, class T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p) { os << '(' << p.first << ", " << p.second << ')'; return os; } template<class T, size_t n> istream &operator>>(istream &is, array<T, n> &v) { for (auto &e : v) is >> e; return is; } template<class T, size_t n> ostream &operator<<(ostream &os, const array<T, n> &v) { for (auto &e : v) os << e << '\n'; return os; } template<class T> istream &operator>>(istream &is, vector<T> &v) { for (auto &e : v) is >> e; return is; } template<class T> ostream &operator<<(ostream &os, const vector<T> &v) { for (auto &e : v) os << e << '\n'; return os; } template<class T> inline void deduplicate(vector<T> &a) { sort(all(a)); a.erase(unique(all(a)), a.end()); } template<class T> inline int count_between(const vector<T> &a, T l, T r) { return lower_bound(all(a), r) - lower_bound(all(a), l); } // [l, r) inline ll cDiv(const ll x, const ll y) { return (x+y-1) / y; } // ceil(x/y) inline int fLog2(const ll x) { assert(x > 0); return 63-__builtin_clzll(x); } // floor(log2(x)) inline int cLog2(const ll x) { assert(x > 0); return (x == 1) ? 0 : 64-__builtin_clzll(x-1); } // ceil(log2(x)) inline int popcount(const ll x) { return __builtin_popcountll(x); } inline void fail() { cout << -1 << '\n'; exit(0); } struct fast_ios { fast_ios(){ cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_; // const int INF = (1<<30) - 1; // const ll INFll = (1ll<<60) - 1; // const ld EPS = 1e-10; // const ld PI = acos(-1.0); // using mint = modint998244353; // using mint = modint1000000007; // using mint = modint; // using Vm = V<mint>; using VVm = V<Vm>; void solve() { ll a, b, c; cin >> a >> b >> c; if (a == 0) { if (b == 0) { int ans = 0; if (c == 0) ans = -1; cout << ans << '\n'; } else { ld x = -ld(c) / b; cout << 1 << '\n' << x << '\n'; } return; } if (b * b / 4 < a * c) { cout << 0 << '\n'; return; } if ((b * b % 4 == 0) && (b * b / 4 == a * c)) { ld x = -ld(b) / (2*a); cout << 1 << '\n' << x << '\n'; return; } if (c == 0) { auto [x, y] = minmax(ld(0), -ld(b) / a); cout << 2 << '\n' << x << '\n' << y << '\n'; return; } ld d = ld(b) * b - ld(4) * a * c; ld x1, x2; if (b > 0) x1 = (- b - sqrt(d)) / (2*a); else x1 = (- b + sqrt(d)) / (2*a); x2 = c / (a * x1); auto [x, y] = minmax(x1, x2); cout << 2 << '\n' << x << '\n' << y << '\n'; } int main() { // int t; cin >> t; int t = 1; rep(_, t) solve(); if (t == 0) cout << '\n'; } // 8 // 0 0 0 // 0 0 1 // 0 3 2 // 5 0 2 // 4 3 0 // 2 0 1 // 5 0 0 // 5 10 5