結果
| 問題 | No.1179 Quadratic Equation |
| ユーザー |
 hamamu
|
| 提出日時 | 2020-08-21 21:46:55 |
| 言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 2,000 ms |
| コード長 | 11,075 bytes |
| コンパイル時間 | 2,024 ms |
| コンパイル使用メモリ | 202,796 KB |
| 実行使用メモリ | 6,820 KB |
| 最終ジャッジ日時 | 2024-10-15 05:30:57 |
| 合計ジャッジ時間 | 2,650 ms |
|
ジャッジサーバーID （参考情報） |
judge5 / judge3 |
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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 | 2 ms
6,820 KB |
| testcase_02 | AC | 2 ms
6,816 KB |
| testcase_03 | AC | 2 ms
6,820 KB |
| testcase_04 | AC | 2 ms
6,820 KB |
| testcase_05 | AC | 2 ms
6,816 KB |
| testcase_06 | AC | 2 ms
6,816 KB |
| testcase_07 | AC | 2 ms
6,820 KB |
| testcase_08 | AC | 2 ms
6,816 KB |
| testcase_09 | AC | 2 ms
6,816 KB |
| testcase_10 | AC | 2 ms
6,816 KB |
| testcase_11 | AC | 2 ms
6,816 KB |
| testcase_12 | AC | 2 ms
6,820 KB |
| testcase_13 | AC | 2 ms
6,820 KB |
ソースコード
#include "bits/stdc++.h"
#include <random>
using namespace std;
using ll =long long; using dd =double; using pll =pair<ll, ll>; using tll =tuple<ll,ll,ll>;
using vll =vector<ll>; using vdd =vector<dd>; using vpll =vector<pll>; using vtll =vector<tll>;
using vvll =vector<vll>; using vvdd =vector<vdd>; using vvpll =vector<vpll>; using vvtll =vector<vtll>;
using vvvll =vector<vvll>; using vvvdd=vector<vvdd>; using vvvpll =vector<vvpll>; using vvvtll =vector<vvtll>;
using vvvvll=vector<vvvll>;using vvvvdd=vector<vvvdd>;using vvvvpll=vector<vvvpll>;using vvvvtll=vector<vvvtll>;
constexpr ll INF = 1LL << 60;
constexpr dd EPS = 1e-11;
constexpr dd PI = 3.1415926535897932;
//cin,cout高速化のおまじない＋桁数指定
struct Fast{
Fast(){
cin.tie(0);
ios::sync_with_stdio(false);
cout << fixed << setprecision(std::numeric_limits<double>::max_digits10);
}
} fast;
#define REPS(i, S, E) for (ll i = (S); i <= (E); i++)
#define rep(i, S, E) for (ll i = (S); i <= (E); i++)
#define REP(i, N) REPS(i, 0, (N)-1)
#define DEPS(i, S, E) for (ll i = (E); i >= (S); i--)
#define dep(i, E, S) for (ll i = (E); i >= (S); i--)
#define DEP(i, N) DEPS(i, 0, (N)-1)
#define EACH(e, v) for (auto&& e : v)
#define each(e, v) for (auto&& e : v)
#define ALL(v) (v).begin(), (v).end()
#define RALL(v) (v).rbegin(), (v).rend()
template<class T> inline bool chmax(T &a, T b) { if (a < b) { a = b; return true; }return false; }
template<class T> inline bool chmin(T &a, T b) { if (a > b) { a = b; return true; }return false; }
template<class T> inline T MaxE(vector<T>&v,ll S,ll E){T m=v[S]; REPS(i,S,E)chmax(m,v[i]); return m;}//v[S]～v[E]の最大値
template<class T> inline T MinE(vector<T>&v,ll S,ll E){T m=v[S]; REPS(i,S,E)chmin(m,v[i]); return m;}//v[S]～v[E]の最小値
template<class T> inline T MaxE(vector<T> &v, ll N) { return MaxE(v, 0, N - 1); } //先頭N個中の最大値
template<class T> inline T MinE(vector<T> &v, ll N) { return MinE(v, 0, N - 1); }
template<class T> inline T MaxE(vector<T> &v) { return MaxE(v, (ll)v.size()); }
template<class T> inline T MinE(vector<T> &v) { return MinE(v, (ll)v.size()); }
template<class T> inline ll MaxI(vector<T>&v,ll S,ll E){ll m=S; REPS(i,S,E){if(v[i]>v[m])m=i;} return m;}
template<class T> inline ll MinI(vector<T>&v,ll S,ll E){ll m=S; REPS(i,S,E){if(v[i]<v[m])m=i;} return m;}
template<class T> inline ll MaxI(vector<T> &v, ll N) { return MaxI(v, 0, N - 1); }
template<class T> inline ll MinI(vector<T> &v, ll N) { return MinI(v, 0, N - 1); }
template<class T> inline ll MaxI(vector<T> &v) { return MaxI(v, (ll)v.size()); }
template<class T> inline ll MinI(vector<T> &v) { return MinI(v, (ll)v.size()); }
template<class T> inline T Sum(vector<T> &v, ll S,ll E){ T s=v[S]; REPS(i,S+1,E)s+=v[i]; return s; }
template<class T> inline T Sum(vector<T> &v, ll N) { return Sum(v, 0, N - 1); }
template<class T> inline T Sum(vector<T> &v) { return Sum(v, v.size()); }
template<class T> inline ll sz(T &v){ return (ll)v.size(); }
template<class T> inline T POW(T a, ll n){ T r=1; for (; n>0; n>>=1, a*=a){ if (n&1)r*=a; } return r; }
inline ll POW(int a, ll n){ return POW((ll)a, n); }
inline ll CEIL(ll a, ll b){ return (a+b-1)/b; }
ll Gcd(ll a, ll b){ return (b==0) ? a : Gcd(b, a%b); }
ll Lcm(ll a, ll b){ return a * b / Gcd(a, b); }
inline ll MSB(ll a){for(ll o=63,x=-1;;){ll m=(o+x)/2; if(a<(1LL<<m))o=m; else x=m; if(o-x==1)return x;}}
inline ll Upper2N(ll s) { return 1LL<<MSB(s)<<1; }//s<2^nなる最小の2^n
inline vll Bit2Idx(ll m){vll v; for(ll i=0;m;m>>=1,i++) if(m&1)v.push_back(i); return v;}
inline ll BitNum(ll m){ for (ll c=0;; m>>=1){ c+=m&1; if (!m)return c; } }
inline ll Bit(ll s, ll i){ return (s>>i)&1; } //sの第ibit i=0-63
[[nodiscard]] inline ll BitOn(ll s, ll i){ return s|(1LL<<i); } //sの第ibitON i=0-63
[[nodiscard]] inline ll BitOff(ll s, ll i){ return s&~(1LL<<i); } //sの第ibitOFF i=0-63
[[nodiscard]] inline ll BitCut(ll s, ll i){ return s & (1LL<<++i)-1; }//sの第0～第ibitを抽出
inline vll str2num(string &s, ll N) {vll v(N); REP(i, N) v[i]=(ll)(s[i]-'0'); return v;}
inline vll ALP2num(string &s, ll N) {vll v(N); REP(i, N) v[i]=(ll)(s[i]-'A'); return v;}
inline vll alp2num(string &s, ll N) {vll v(N); REP(i, N) v[i]=(ll)(s[i]-'a'); return v;}
template<class T> inline ll FloorIdx(vector<T> &v, T x){ return upper_bound(ALL(v), x)-v.begin()-1; }
template<class T> inline ll CeilIdx(vector<T> &v, T x){ return lower_bound(ALL(v), x)-v.begin(); }
template<class T> inline ll UnderNumOf(vector<T> &v, T x){ //sort済vのx以下の個数を得る
return upper_bound(v.begin(), v.end(), x) - v.begin(); }
template<class T, class Pr> inline ll UnderNumOf(vector<T> &v, T x, Pr pred){ //x以下個数
return upper_bound(v.begin(), v.end(), x, pred) - v.begin(); }
template<class T> inline ll OverNumOf(vector<T> &v, T x){ //sort済vのx以上の個数を得る
return (ll)v.size() - (lower_bound(v.begin(), v.end(), x) - v.begin()); }
template<class T, class Pr> inline ll OverNumOf(vector<T> &v, T x, Pr pred){ //x以上の個数
return (ll)v.size() - (lower_bound(v.begin(), v.end(), x, pred) - v.begin()); }
template<class T=ll> inline vector<T> cinv(ll N){ vector<T> v(N); REP(i, N)cin>>v[i]; return v;}
template<class T, class S> inline vector<pair<T, S>> cinv2(ll N){
vector<pair<T, S>> v(N); REP(i,N){cin>>v[i].first>>v[i].second;} return v; }
template<class T> inline vector<T> cinv2(ll N){
vector<T> v(N); REP(i, N){ll a, b; cin>>a>>b; v[i]={a,b};} return v;}
template<class T,class S,class R> inline vector<tuple<T, S, R>> cinv3(ll N){
vector<tuple<T,S,R>> v(N); REP(i,N){cin>>get<0>(v[i])>>get<1>(v[i])>>get<2>(v[i]);} return v;}
template<class T> inline vector<T> cinv3(ll N){
vector<T> v(N); REP(i, N){ll a,b,c; cin>>a>>b>>c; v[i]={a,b,c};} return v;}
template<class T,class S,class R,class Q> inline vector<tuple<T,S,R,Q>> cinv4(ll N){
vector<tuple<T,S,R,Q>> v(N); REP(i,N){cin>>get<0>(v[i])>>get<1>(v[i])>>get<2>(v[i])>>get<3>(v[i]);} return v;}
template<class T> inline vector<T> cinv4(ll N){
vector<T> v(N); REP(i, N){ll a,b,c,d; cin>>a>>b>>c>>d; v[i]={a,b,c,d};} return v;}
template<class T=ll> inline vector<vector<T>> cinvv(ll N, ll M){
vector<vector<T>> vv(N); REP(i, N) vv[i] = cinv(M); return vv;}
template<class T> inline void coutv(vector<T> &v, string d=" "){
ll N=(ll)v.size(); REP(i,N){cout << v[i] << ((i==N-1)?"":d);} cout<<'\n';}
template<class T> inline void coutv(deque<T> &v, string d=" "){
ll N=(ll)v.size(); REP(i,N){cout << v[i] << ((i==N-1)?"":d);} cout<<'\n';}
template<class T> void bye(T a){cout << a << '\n'; exit(0);}
#if defined(_DEBUG)
ll dumpW = 5;
template<class T> void Dump(vector<T> &v){
REP(i, (ll)v.size()) { cerr << ((i==0)?"[":" ") << setw(dumpW) << v[i]; } cerr << "]";
}
void Dump(vll &v){
REP(i, (ll)v.size()) {
cerr << ((i==0)?"[":" ") << setw(dumpW);
if (v[i] == INF) cerr << "INF";
else if (v[i] == -INF) cerr << "-INF";
else cerr << v[i];
} cerr << "]";
}
template<class T> void Dump(vector<vector<T>> &v){
ll N=(ll)v.size(); string d[2][2]={{" ", "["}, {"\n", "]\n"}};
REP(i, N) { cerr << d[0][i==0]; Dump(v[i]); cerr << d[1][i==N-1]; }
}
template<class T> void Dump(vector<vector<vector<T>>> &v){
ll N=(ll)v.size(); string d[2]={" <", "[ <"};
REP(i, N) { cerr << d[i==0] << i << ">\n"; Dump(v[i]); } cerr << "]\n";
}
template<class T> void Dump(vector<vector<vector<vector<T>>>> &v){
ll N=(ll)v.size(); string d[2]={" ---<", "[ ---<"};
REP(i, N) { cerr << d[i==0] << i << ">---\n"; Dump(v[i]); } cerr << "]\n";
}
template<class T> void Dump(vector<vector<vector<vector<vector<T>>>>> &v){
ll N=(ll)v.size(); string d[2]={" ======<", "[ ======<"};
REP(i, N) { cerr << d[i==0] << i << ">======\n"; Dump(v[i]); } cerr << "]\n";
}
template<class T, class S> void Dump(map<T, S> &m){
for(auto e: m) cout << e.first << " : " << e.second << '\n';
}
#else
template<class T> void Dump(vector<T> &v){}
template<class T> void Dump(vector<vector<T>> &v){}
template<class T> void Dump(vector<vector<vector<T>>> &v){}
template<class T> void Dump(vector<vector<vector<vector<T>>>> &v){}
template<class T> void Dump(vector<vector<vector<vector<vector<T>>>>> &v){}
#endif
template<ll MOD> struct mll_{
ll val;
mll_(ll v = 0): val(v % MOD){ if (val < 0) val += MOD; }
mll_ operator - () const { return -val; }
mll_ operator + (const mll_ &b) const { return val + b.val; }
mll_ operator - (const mll_ &b) const { return val - b.val; }
mll_ operator * (const mll_ &b) const { return val * b.val; }
mll_ operator / (const mll_ &b) const { return mll_(*this) /= b; }
mll_ operator + (ll b) const { return *this + mll_(b); }
mll_ operator - (ll b) const { return *this - mll_(b); }
mll_ operator * (ll b) const { return *this * mll_(b); }
friend mll_ operator + (ll a, const mll_ &b) { return b + a; }
friend mll_ operator - (ll a, const mll_ &b) { return -b + a; }
friend mll_ operator * (ll a, const mll_ &b) { return b * a; }
friend mll_ operator / (ll a, const mll_ &b) { return mll_(a)/b; }
mll_ &operator += (const mll_ &b) { val=(val+b.val)%MOD; return *this; }
mll_ &operator -= (const mll_ &b) { val=(val+MOD-b.val)%MOD; return *this; }
mll_ &operator *= (const mll_ &b) { val=(val*b.val)%MOD; return *this; }
mll_ &operator /= (const mll_ &b) {
ll c=b.val, d=MOD, u=1, v=0;
while (d){
ll t = c / d;
c -= t * d; swap(c, d);
u -= t * v; swap(u, v);
}
val = val * u % MOD;
if (val < 0) val += MOD;
return *this;
}
mll_ &operator += (ll b) { return *this += mll_(b); }
mll_ &operator -= (ll b) { return *this -= mll_(b); }
mll_ &operator *= (ll b) { return *this *= mll_(b); }
mll_ &operator /= (ll b) { return *this /= mll_(b); }
bool operator == (const mll_ &b) { return val == b.val; }
bool operator != (const mll_ &b) { return val != b.val; }
bool operator == (ll b) { return *this == mll_(b); }
bool operator != (ll b) { return *this != mll_(b); }
friend bool operator == (ll a, const mll_ &b) { return mll_(a) == b.val; }
friend bool operator != (ll a, const mll_ &b) { return mll_(a) != b.val; }
friend ostream &operator << (ostream &os, const mll_ &a) { return os << a.val; }
friend istream &operator >> (istream &is, mll_ &a) { return is >> a.val; }
static mll_ Combination(ll a, ll b){
chmin(b, a-b);
if (b<0) return mll_(0);
mll_ c = 1;
REP(i, b) c *= a-i;
REP(i, b) c /= i+1;
return c;
}
};
using mll = mll_<1000000007LL>; //1000000007LL;// 998244353LL;
using vmll = std::vector<mll>;
using vvmll = std::vector<vmll>;
using vvvmll = std::vector<vvmll>;
using vvvvmll = std::vector<vvvmll>;
using vvvvvmll = std::vector<vvvvmll>;
void solve()
{
ll a, b, c; cin >> a >> b >> c;
ll D=b*b-4*a*c;
if (D<0){
cout << "imaginary" << '\n'; return;
}
if (D==0){
cout << -b/(2.*a) << '\n'; return;
}
dd sqD=sqrt(D);
dd x =(-b-sqD)/(2.*a);
dd xx=(-b+sqD)/(2.*a);
if (x>xx)swap(x, xx);
cout << x << " " << xx << '\n';
}
int main(){
#if 1
solve();
#else
ll t; cin >> t;
rep(i, 0, t-1){
solve();
}
#endif
return 0;
}