結果

問題 No.955 ax^2+bx+c=0
ユーザー ningenMeningenMe
提出日時 2019-12-24 01:50:18
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 2 ms / 2,000 ms
コード長 3,184 bytes
コンパイル時間 1,369 ms
コンパイル使用メモリ 166,880 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-09-19 06:02:44
合計ジャッジ時間 4,046 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge4
このコードへのチャレンジ
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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
5,376 KB
testcase_02 AC 2 ms
5,376 KB
testcase_03 AC 1 ms
5,376 KB
testcase_04 AC 2 ms
5,376 KB
testcase_05 AC 1 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 1 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 1 ms
5,376 KB
testcase_15 AC 1 ms
5,376 KB
testcase_16 AC 1 ms
5,376 KB
testcase_17 AC 1 ms
5,376 KB
testcase_18 AC 2 ms
5,376 KB
testcase_19 AC 1 ms
5,376 KB
testcase_20 AC 1 ms
5,376 KB
testcase_21 AC 1 ms
5,376 KB
testcase_22 AC 1 ms
5,376 KB
testcase_23 AC 2 ms
5,376 KB
testcase_24 AC 1 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 1 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 1 ms
5,376 KB
testcase_34 AC 1 ms
5,376 KB
testcase_35 AC 2 ms
5,376 KB
testcase_36 AC 1 ms
5,376 KB
testcase_37 AC 1 ms
5,376 KB
testcase_38 AC 1 ms
5,376 KB
testcase_39 AC 1 ms
5,376 KB
testcase_40 AC 1 ms
5,376 KB
testcase_41 AC 1 ms
5,376 KB
testcase_42 AC 1 ms
5,376 KB
testcase_43 AC 1 ms
5,376 KB
testcase_44 AC 1 ms
5,376 KB
testcase_45 AC 2 ms
5,376 KB
testcase_46 AC 2 ms
5,376 KB
testcase_47 AC 1 ms
5,376 KB
testcase_48 AC 2 ms
5,376 KB
testcase_49 AC 1 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 1 ms
5,376 KB
testcase_56 AC 2 ms
5,376 KB
testcase_57 AC 2 ms
5,376 KB
testcase_58 AC 1 ms
5,376 KB
testcase_59 AC 1 ms
5,376 KB
testcase_60 AC 2 ms
5,376 KB
testcase_61 AC 1 ms
5,376 KB
testcase_62 AC 1 ms
5,376 KB
testcase_63 AC 1 ms
5,376 KB
testcase_64 AC 2 ms
5,376 KB
testcase_65 AC 1 ms
5,376 KB
testcase_66 AC 2 ms
5,376 KB
testcase_67 AC 1 ms
5,376 KB
testcase_68 AC 2 ms
5,376 KB
testcase_69 AC 1 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 1 ms
5,376 KB
testcase_74 AC 1 ms
5,376 KB
testcase_75 AC 2 ms
5,376 KB
testcase_76 AC 2 ms
5,376 KB
testcase_77 AC 1 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 1 ms
5,376 KB
testcase_83 AC 1 ms
5,376 KB
testcase_84 AC 1 ms
5,376 KB
testcase_85 AC 2 ms
5,376 KB
testcase_86 AC 2 ms
5,376 KB
testcase_87 AC 1 ms
5,376 KB
testcase_88 AC 1 ms
5,376 KB
testcase_89 AC 1 ms
5,376 KB
testcase_90 AC 2 ms
5,376 KB
testcase_91 AC 1 ms
5,376 KB
testcase_92 AC 1 ms
5,376 KB
testcase_93 AC 1 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 1 ms
5,376 KB
testcase_99 AC 1 ms
5,376 KB
testcase_100 AC 1 ms
5,376 KB
testcase_101 AC 1 ms
5,376 KB
testcase_102 AC 2 ms
5,376 KB
testcase_103 AC 1 ms
5,376 KB
testcase_104 AC 2 ms
5,376 KB
testcase_105 AC 1 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 1 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 1 ms
5,376 KB
testcase_116 AC 2 ms
5,376 KB
testcase_117 AC 1 ms
5,376 KB
testcase_118 AC 2 ms
5,376 KB
testcase_119 AC 2 ms
5,376 KB
testcase_120 AC 1 ms
5,376 KB
testcase_121 AC 1 ms
5,376 KB
testcase_122 AC 1 ms
5,376 KB
testcase_123 AC 2 ms
5,376 KB
testcase_124 AC 2 ms
5,376 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ull = unsigned long long;
 
#define REP(i,n) for(long long i = 0; i < (n); i++)
#define FOR(i, m, n) for(long long i = (m);i < (n); ++i)
#define ALL(obj) (obj).begin(),(obj).end()
#define SPEED cin.tie(0);ios::sync_with_stdio(false);
 
template<class T> using V = vector<T>;
template<class T, class U> using P = pair<T, U>;
template<class T> using PQ = priority_queue<T>;
template<class T> using PQR = priority_queue<T,vector<T>,greater<T>>;
 
constexpr long long MOD = (long long)1e9 + 7;
constexpr long long MOD2 = 998244353;
constexpr long long HIGHINF = (long long)1e18;
constexpr long long LOWINF = (long long)1e15;
constexpr long double PI = 3.1415926535897932384626433;
 
template <class T> vector<T> multivector(size_t N,T init){return vector<T>(N,init);}
template <class... T> auto multivector(size_t N,T... t){return vector<decltype(multivector(t...))>(N,multivector(t...));}
template <class T> void corner(bool flg, T hoge) {if (flg) {cout << hoge << endl; exit(0);}}
template <class T, class U>ostream &operator<<(ostream &o, const map<T, U>&obj) {o << "{"; for (auto &x : obj) o << " {" << x.first << " : " << x.second << "}" << ","; o << " }"; return o;}
template <class T>ostream &operator<<(ostream &o, const set<T>&obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr) o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;}
template <class T>ostream &operator<<(ostream &o, const multiset<T>&obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr) o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;}
template <class T>ostream &operator<<(ostream &o, const vector<T>&obj) {o << "{"; for (int i = 0; i < (int)obj.size(); ++i)o << (i > 0 ? ", " : "") << obj[i]; o << "}"; return o;}
template <class T, class U>ostream &operator<<(ostream &o, const pair<T, U>&obj) {o << "{" << obj.first << ", " << obj.second << "}"; return o;}
template <template <class tmp>  class T, class U> ostream &operator<<(ostream &o, const T<U> &obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr)o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;}
void print(void) {cout << endl;}
template <class Head> void print(Head&& head) {cout << head;print();}
template <class Head, class... Tail> void print(Head&& head, Tail&&... tail) {cout << head << " ";print(forward<Tail>(tail)...);}
template <class T> void chmax(T& a, const T b){a=max(a,b);}
template <class T> void chmin(T& a, const T b){a=min(a,b);}
void YN(bool flg) {cout << (flg ? "YES" : "NO") << endl;}
void Yn(bool flg) {cout << (flg ? "Yes" : "No") << endl;}
void yn(bool flg) {cout << (flg ? "yes" : "no") << endl;}


int main() {
	ll a,b,c; cin >> a >> b >> c;
	long double x=a,y=b,z=c;
	corner(a==0&&b==0&&c==0,-1);
	corner(a==0&&b==0&&c!=0,0);
	if(a==0){
		printf("1\n%.18Lf\n",-z/y);
		return 0;
	}
	corner(b*b<4*a*c,0);
	if(b*b==4*a*c){
		printf("1\n%.18Lf\n",-y/(2*x));
		return 0;
	}
	z = y*y-4*x*z;
	long double s,t;
	if(b>0) s = (-y-sqrtl(z))/(2*x);
	else s = (-y+sqrtl(z))/(2*x);
	t = c/(x*s);
	printf("2\n%.18Lf\n%.18Lf\n",min(s,t),max(s,t));
	return 0;
}
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