#497407 (C++17) No.955 ax^2+bx+c=0

提出ソース

結果

問題	No.955 ax^2+bx+c=0
ユーザー	Konton7
提出日時	2020-06-16 01:31:00
言語	C++17 (gcc 12.3.0 + boost 1.83.0)
結果	WA
実行時間	-
コード長	8,250 bytes
コンパイル時間	2,141 ms
コンパイル使用メモリ	211,832 KB
実行使用メモリ	6,948 KB
最終ジャッジ日時	2024-07-03 11:44:12
合計ジャッジ時間	4,613 ms
ジャッジサーバーID （参考情報）	judge2 / 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 6,812 KB
testcase_01	AC	2 ms 6,944 KB
testcase_02	AC	2 ms 6,940 KB
testcase_03	AC	1 ms 6,944 KB
testcase_04	AC	2 ms 6,944 KB
testcase_05	AC	2 ms 6,940 KB
testcase_06	AC	1 ms 6,940 KB
testcase_07	AC	1 ms 6,940 KB
testcase_08	AC	2 ms 6,940 KB
testcase_09	AC	1 ms 6,940 KB
testcase_10	AC	2 ms 6,944 KB
testcase_11	AC	2 ms 6,940 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	2 ms 6,944 KB
testcase_16	AC	2 ms 6,944 KB
testcase_17	AC	2 ms 6,940 KB
testcase_18	AC	2 ms 6,940 KB
testcase_19	AC	2 ms 6,940 KB
testcase_20	AC	2 ms 6,944 KB
testcase_21	AC	2 ms 6,944 KB
testcase_22	AC	1 ms 6,944 KB
testcase_23	AC	2 ms 6,940 KB
testcase_24	AC	1 ms 6,944 KB
testcase_25	AC	2 ms 6,940 KB
testcase_26	AC	1 ms 6,940 KB
testcase_27	AC	2 ms 6,944 KB
testcase_28	AC	2 ms 6,940 KB
testcase_29	AC	2 ms 6,944 KB
testcase_30	AC	2 ms 6,940 KB
testcase_31	AC	2 ms 6,940 KB
testcase_32	AC	1 ms 6,944 KB
testcase_33	AC	2 ms 6,944 KB
testcase_34	WA	-
testcase_35	WA	-
testcase_36	WA	-
testcase_37	WA	-
testcase_38	WA	-
testcase_39	WA	-
testcase_40	WA	-
testcase_41	WA	-
testcase_42	WA	-
testcase_43	WA	-
testcase_44	WA	-
testcase_45	WA	-
testcase_46	WA	-
testcase_47	WA	-
testcase_48	WA	-
testcase_49	WA	-
testcase_50	WA	-
testcase_51	WA	-
testcase_52	WA	-
testcase_53	WA	-
testcase_54	WA	-
testcase_55	WA	-
testcase_56	WA	-
testcase_57	WA	-
testcase_58	WA	-
testcase_59	WA	-
testcase_60	AC	2 ms 6,940 KB
testcase_61	AC	2 ms 6,944 KB
testcase_62	AC	2 ms 6,944 KB
testcase_63	AC	2 ms 6,940 KB
testcase_64	AC	2 ms 6,940 KB
testcase_65	AC	2 ms 6,940 KB
testcase_66	AC	2 ms 6,944 KB
testcase_67	AC	2 ms 6,940 KB
testcase_68	AC	2 ms 6,944 KB
testcase_69	AC	2 ms 6,944 KB
testcase_70	AC	1 ms 6,940 KB
testcase_71	AC	2 ms 6,940 KB
testcase_72	AC	2 ms 6,944 KB
testcase_73	AC	1 ms 6,940 KB
testcase_74	AC	2 ms 6,940 KB
testcase_75	AC	2 ms 6,940 KB
testcase_76	AC	2 ms 6,940 KB
testcase_77	AC	2 ms 6,940 KB
testcase_78	AC	2 ms 6,944 KB
testcase_79	AC	2 ms 6,940 KB
testcase_80	AC	2 ms 6,944 KB
testcase_81	AC	2 ms 6,944 KB
testcase_82	AC	2 ms 6,940 KB
testcase_83	AC	2 ms 6,940 KB
testcase_84	AC	2 ms 6,944 KB
testcase_85	AC	1 ms 6,944 KB
testcase_86	AC	2 ms 6,940 KB
testcase_87	AC	2 ms 6,940 KB
testcase_88	AC	2 ms 6,940 KB
testcase_89	AC	2 ms 6,944 KB
testcase_90	AC	2 ms 6,940 KB
testcase_91	AC	2 ms 6,940 KB
testcase_92	AC	1 ms 6,944 KB
testcase_93	AC	2 ms 6,940 KB
testcase_94	AC	2 ms 6,944 KB
testcase_95	AC	1 ms 6,944 KB
testcase_96	AC	1 ms 6,944 KB
testcase_97	AC	2 ms 6,944 KB
testcase_98	AC	2 ms 6,944 KB
testcase_99	AC	2 ms 6,940 KB
testcase_100	AC	2 ms 6,940 KB
testcase_101	AC	2 ms 6,940 KB
testcase_102	AC	1 ms 6,944 KB
testcase_103	AC	2 ms 6,944 KB
testcase_104	AC	2 ms 6,940 KB
testcase_105	AC	2 ms 6,944 KB
testcase_106	AC	2 ms 6,940 KB
testcase_107	AC	2 ms 6,940 KB
testcase_108	AC	2 ms 6,944 KB
testcase_109	AC	2 ms 6,940 KB
testcase_110	AC	1 ms 6,944 KB
testcase_111	AC	2 ms 6,940 KB
testcase_112	AC	1 ms 6,944 KB
testcase_113	AC	2 ms 6,944 KB
testcase_114	AC	2 ms 6,944 KB
testcase_115	AC	2 ms 6,940 KB
testcase_116	AC	2 ms 6,944 KB
testcase_117	AC	2 ms 6,940 KB
testcase_118	AC	2 ms 6,940 KB
testcase_119	AC	2 ms 6,940 KB
testcase_120	AC	2 ms 6,944 KB
testcase_121	AC	2 ms 6,944 KB
testcase_122	WA	-
testcase_123	AC	2 ms 6,940 KB
testcase_124	AC	2 ms 6,944 KB

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ソースコード

raw source code

#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using VI = vector<int>;
using VL = vector<ll>;
using VS = vector<string>;
using VB = vector<bool>;
using VVI = vector<VI>;
using VVL = vector<VL>;
using PII = std::pair<int, int>;
using PLL = std::pair<ll, ll>;
using TI3 = std::tuple<int, int, int>;
using TI4 = std::tuple<int, int, int, int>;
using TL3 = std::tuple<ll, ll, ll>;
using TL4 = std::tuple<ll, ll, ll, ll>;

#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define repr(i, n) for (int i = (int)(n)-1; i >= 0; i--)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
#define rep3(i, s, n, d) for (int i = (s); i < (int)(n); i += (d))
#define allpt(v) (v).begin(), (v).end()
#define allpt_c(v) (v).cbegin(), (v).cend()
#define allpt_r(v) (v).rbegin(), (v).rend()

const int mod1 = 1e9 + 7, mod2 = 998244353, mod3 = 1e9 + 9;
const int mod = mod1;
const ll inf = 1e18;

const string wsp = " ";
const string tb = "\t";
const string rt = "\n";

template <typename T>
void show1dvec(const vector<T> &v)
{
    if (v.size() == 0)
        return;
    int n = v.size() - 1;
    rep(i, n) cout << v[i] << wsp;
    cout << v[n] << rt;

    return;
}

template <typename T>
void show2dvec(const vector<vector<T>> &v)
{
    int n = v.size();
    rep(i, n) show1dvec(v[i]);
}

template <typename T, typename S>
void show1dpair(const vector<pair<T, S>> &v)
{
    int n = v.size();
    rep(i, n) cout << v[i].first << wsp << v[i].second << rt;
    return;
}

template <typename T, typename S>
void pairzip(const vector<pair<T, S>> &v, vector<T> &t, vector<T> &s)
{
    int n = v.size();
    rep(i, n)
    {
        t.push_back(v[i].first);
        s.push_back(v[i].second);
    }
    return;
}

template <typename T>
void maxvec(vector<T> &v)
{
    T s = v[0];
    int n = v.size();
    rep(i, n - 1)
    {
        if (s > v[i + 1])
        {
            v[i + 1] = s;
        }
        s = v[i + 1];
    }
}

template <typename T, typename S>
bool myfind(T t, S s)
{
    return find(t.cbegin(), t.cend(), s) != t.cend();
}

bool check(int y, int x, int h, int w)
{
    return 0 <= y && y < h && 0 <= x && x < w;
}

template <typename T>
vector<T> cumsum(const vector<T> &v)
{
    T s = 0;
    vector<T> ret;

    rep(i, v.size())
    {
        s += v[i];
        s %= mod;
        ret.emplace_back(s);
    }
    return ret;
}

bool iskadomatsu(int a, int b, int c)
{
    return (a != b && b != c && c != a) && ((a > b && b < c) || (a < b && b > c));
}

VS split(string s, char c)
{
    VS ret;
    string part;
    s += c;
    rep(i, s.length())
    {
        if (s[i] == c)
        {
            ret.emplace_back(part);
            part = "";
        }
        else if (s[i] != c)
        {
            part += s[i];
        }
    }
    return ret;
}

string removezero(string &s)
{
    string ret;
    for (auto z : s)
        if (z != '0')
            ret += z;
    return ret;
}

ll sumdigit(ll x)
{
    ll ans{0};
    while (x > 0)
    {
        ans += x % 10;
        x /= 10;
    }
    return ans;
}

template <typename T, typename S, typename R>
ll pow_mod(T p, S q, R mod = 1ll)
{
    ll ret = 1, r = p;
    while (q)
    {
        if (q % 2)
            ret *= r, ret %= mod;
        r = (r * r) % mod, q /= 2;
    }
    return ret % mod;
}

template <typename T, typename S>
ll pow_no_mod(T p, S q)
{
    ll ret = 1, r = p;
    while (q)
    {
        if (q % 2)
            ret *= r;
        r = (r * r), q /= 2;
    }
    return ret;
}

void make_frac_tables(VL &frac_list, VL &frac_inv_list)
{
    rep(i, frac_list.size() - 1)
    {
        frac_list[i + 1] *= frac_list[i] * (i + 1);
        frac_list[i + 1] %= mod;
        frac_inv_list[i + 1] *= frac_inv_list[i] * pow_mod(i + 1, mod - 2, mod);
        frac_inv_list[i + 1] %= mod;
    }
}

ll comb(int a, int b, const VL &frac_list, const VL &frac_inv_list)
{
    if (a < b)
        return 0;
    if (b < 0)
        return 0;
    ll ret = frac_list[a];
    ret *= frac_inv_list[b];
    ret %= mod;
    ret *= frac_inv_list[a - b];
    ret %= mod;
    return ret;
}

ll getmedian_double(VL v)
{
    ll ret;
    sort(allpt(v));
    int n = v.size();
    if (n % 2 == 0)
    {
        ret = v[n / 2] + v[n / 2 - 1];
    }
    else
    {
        ret = 2 * v[n / 2];
    }
    return ret;
}

class RangeMinorMaxorSumQuery // 0-index
{
    int const intmax = 2147483647;
    int const intmin = 0;
    vector<int> sgt;
    int n;
    int k;

public:
    RangeMinorMaxorSumQuery(int n1, int f = -1)
    {
        if (f == -1)
            f = intmax;
        else if (f == 0)
            f = intmin;
        int na = 1;
        int ka = 0;
        while (na < n1)
        {
            na *= 2;
            ka++;
        }
        for (int i = 0; i < 2 * na; i++)
            sgt.push_back(f);
        n = na;
        k = ka;
    }

    void update_min(int i, int x)
    {
        i += n;
        sgt[i] = x;
        while (i > 1)
        {
            i /= 2;
            sgt[i] = min(sgt[2 * i], sgt[2 * i + 1]);
        }
    }
    void update_max(int i, int x)
    {
        i += n;
        sgt[i] = x;
        while (i > 1)
        {
            i /= 2;
            sgt[i] = max(sgt[2 * i], sgt[2 * i + 1]);
        }
    }
    void update_sum(int i, int x)
    {
        i += n;
        sgt[i] = x;
        while (i > 1)
        {
            i /= 2;
            sgt[i] = sgt[2 * i] + sgt[2 * i + 1];
        }
    }

    void add_sum(int i, int x)
    {
        i += n;
        sgt[i] += x;
        while (i > 1)
        {
            i /= 2;
            sgt[i] = sgt[2 * i] + sgt[2 * i + 1];
        }
    }

    int getmin(int a, int b, int k = 1, int l = 0, int r = -1) //閉区間 l <= x < r とする
    {
        if (r == -1)
            r = n;
        if (r <= a || b <= l)
            return intmax;
        if (a == l && b == r)
            return sgt[k];
        else
            return min(getmin(a, min(b, (l + r) / 2), 2 * k, l, (l + r) / 2), getmin(max(a, (l + r) / 2), b, 2 * k + 1, (l + r) / 2, r));
    }
    int getmax(int a, int b, int k = 1, int l = 0, int r = -1) //閉区間 l <= x < r とする
    {
        if (r == -1)
            r = n;
        if (r <= a || b <= l)
            return intmin;
        if (a == l && b == r)
            return sgt[k];
        else
            return max(getmax(a, min(b, (l + r) / 2), 2 * k, l, (l + r) / 2), getmax(max(a, (l + r) / 2), b, 2 * k + 1, (l + r) / 2, r));
    }
    int getsum(int a, int b, int k = 1, int l = 0, int r = -1) //閉区間 l <= x < r とする
    {
        if (r == -1)
            r = n;
        if (r <= a || b <= l)
            return intmin;
        if (a == l && b == r)
            return sgt[k];
        else
            return getsum(a, min(b, (l + r) / 2), 2 * k, l, (l + r) / 2) + getsum(max(a, (l + r) / 2), b, 2 * k + 1, (l + r) / 2, r);
    }
    void printsegtree()
    {
        for (int i = 0; i < 2 * n; i++)
        {
            cout << sgt[i] << " ";
        }
        cout << endl;
    }
};



int main()
{

    cin.tie(0);
    ios::sync_with_stdio(false);

#ifdef DEBUG
    cout << "DEBUG MODE" << endl;
    ifstream in("input.txt"); //for debug
    cin.rdbuf(in.rdbuf());    //for debug
#endif

    ll ai, bi, ci;
    double a, b, c, d, x1, x2;
    cin >> ai >> bi >> ci;
    a = 1.0 * ai;
    b = 1.0 * bi;
    c = 1.0 * ci;

    if (a == 0)
    {
        if (b == 0)
        {
            if (c == 0)
            {
                cout << -1 << rt;
            }
            else
            {
                cout << 0 << rt;
            }
        }
        else
        {
            cout << 1 << endl;
            printf("%.12f\n", -c / b);
        }
    }
    else
    {
        if (bi * bi - 4 * ai * ci > 0)
        {
            d = b * b - 4 * a * c;
            x1 = (-b - sqrt(d)) / (2.0 * a);
            x2 = (-b + sqrt(d)) / (2.0 * a);
            if (x1 > x2)
                swap(x1, x2);
            cout << 2 << endl;
            printf("%.12f\n", x1);
            printf("%.12f\n", x2);
        }
        else if (bi * bi - 4 * ai * ci == 0)
        {
            cout << 1 << endl;
            printf("%.12f\n", -b / (2.0 * a));
        }
        else
        {
            cout << 0 << rt;
        }
    }

    return 0;
}

yukicoder

結果

テストケース

ソースコード