結果

問題 No.1688 Veterinarian
ユーザー packer_jppacker_jp
提出日時 2021-09-24 21:58:24
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 191 ms / 3,000 ms
コード長 9,881 bytes
コンパイル時間 2,131 ms
コンパイル使用メモリ 225,016 KB
実行使用メモリ 224,640 KB
最終ジャッジ日時 2024-07-05 10:33:24
合計ジャッジ時間 3,144 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
このコードへのチャレンジ
（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 1 ms
6,816 KB
testcase_01 AC 2 ms
6,944 KB
testcase_02 AC 1 ms
6,940 KB
testcase_03 AC 1 ms
6,940 KB
testcase_04 AC 1 ms
6,940 KB
testcase_05 AC 1 ms
6,940 KB
testcase_06 AC 2 ms
6,940 KB
testcase_07 AC 25 ms
22,400 KB
testcase_08 AC 191 ms
224,640 KB
testcase_09 AC 179 ms
209,664 KB
testcase_10 AC 18 ms
21,248 KB
testcase_11 AC 21 ms
26,240 KB
testcase_12 AC 4 ms
6,940 KB
testcase_13 AC 3 ms
6,940 KB
testcase_14 AC 6 ms
7,424 KB
testcase_15 AC 15 ms
15,744 KB
testcase_16 AC 2 ms
6,940 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;

#define all(a) begin(a), end(a)
#define rall(a) rbegin(a), rend(a)
#define uniq(a) (a).erase(unique(all(a)), (a).end())
#define SZ(x) ((int)(x).size())
#define pb(x) push_back(x)
#define eb(x) emplace_back(x)
#define vsum(x) reduce(all(x))
#define vmax(a) *max_element(all(a))
#define vmin(a) *min_element(all(a))
#define LB(c, x) distance((c).begin(), lower_bound(all(c), (x)))
#define UB(c, x) distance((c).begin(), upper_bound(all(c), (x)))
#define mp make_pair
#define endl '\n'
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using Pi = pair<int, int>;
using Pl = pair<ll, ll>;
using Vi = vector<int>;
using Vl = vector<ll>;
using Vc = vector<char>;
using VVi = vector<vector<int>>;
using VVl = vector<vector<ll>>;
using VVc = vector<vector<char>>;
template <typename T, typename U> using P = pair<T, U>;
template <typename T> using V = vector<T>;
template <typename T> using VV = V<V<T>>;
constexpr ll inf = 1000000000ll;
constexpr ll INF = 4000000004000000000LL;
constexpr ld eps = 1e-15;
constexpr ld PI = 3.141592653589793;
constexpr int popcnt(ull x) { return __builtin_popcountll(x); }
template <typename T> using mat = vector<vector<T>>;
constexpr ll dy[9] = {0, 1, 0, -1, 1, 1, -1, -1, 0};
constexpr ll dx[9] = {1, 0, -1, 0, 1, -1, -1, 1, 0};
constexpr ll sign(ll a) { return (a > 0) - (a < 0); }
constexpr ll fdiv(ll a, ll b) { return a / b - ((a ^ b) < 0 && a % b); }
constexpr ll cdiv(ll a, ll b) { return -fdiv(-a, b); }
constexpr ull bit(int n) { return 1ull << n; }
template <typename T> constexpr T mypow(T x, ll n) {
    T ret = 1;
    while (n) {
        if (n & 1) ret *= x;
        x *= x;
        n >>= 1;
    }
    return ret;
}
constexpr ll modpow(ll x, ll n, ll mod) {
    ll ret = 1;
    while (n) {
        if (n & 1) ret *= x;
        x *= x;
        n >>= 1;
        x %= mod;
        ret %= mod;
    }
    return ret;
}
template <typename T> T xor64(T lb, T ub) {
    static ull x = 88172645463325252ull;
    x ^= x << 7;
    return lb + (x ^= x >> 9) % (ub - lb);
}
constexpr ll safemod(ll x, ll mod) { return (x % mod + mod) % mod; }
template <typename T> constexpr T sq(const T &a) { return a * a; }
template <typename T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;
template <typename T, typename U> bool chmax(T &a, const U &b) { return a < b ? a = b, true : false; }
template <typename T, typename U> bool chmin(T &a, const U &b) { return a > b ? a = b, true : false; }
template <typename T, typename U> ostream &operator<<(ostream &os, const pair<T, U> &a) {
    os << "(" << a.first << ", " << a.second << ")";
    return os;
}
template <typename T, typename U, typename V> ostream &operator<<(ostream &os, const tuple<T, U, V> &a) {
    os << "(" << get<0>(a) << ", " << get<1>(a) << ", " << get<2>(a) << ")";
    return os;
}
template <typename T> ostream &operator<<(ostream &os, const vector<T> &a) {
    os << "(";
    for (auto itr = a.begin(); itr != a.end(); ++itr) os << *itr << (next(itr) != a.end() ? ", " : "");
    os << ")";
    return os;
}
template <typename T> ostream &operator<<(ostream &os, const set<T> &a) {
    os << "(";
    for (auto itr = a.begin(); itr != a.end(); ++itr) os << *itr << (next(itr) != a.end() ? ", " : "");
    os << ")";
    return os;
}
template <typename T> ostream &operator<<(ostream &os, const multiset<T> &a) {
    os << "(";
    for (auto itr = a.begin(); itr != a.end(); ++itr) os << *itr << (next(itr) != a.end() ? ", " : "");
    os << ")";
    return os;
}
template <typename T, typename U> ostream &operator<<(ostream &os, const map<T, U> &a) {
    os << "(";
    for (auto itr = a.begin(); itr != a.end(); ++itr) os << *itr << (next(itr) != a.end() ? ", " : "");
    os << ")";
    return os;
}
template <typename T> void print(const T &a) { cout << a << endl; }
template <typename T> void print(const vector<T> &v) {
    for (auto &e : v) cout << e << " ";
    cout << endl;
}
template <typename T> void scan(vector<T> &a) {
    for (auto &i : a) cin >> i;
}
struct timer {
    clock_t start_time;
    void start() { start_time = clock(); }
    int lap() {
        // return x ms.
        return (clock() - start_time) * 1000 / CLOCKS_PER_SEC;
    }
};
template <typename T = int> struct Edge {
    int from, to;
    T cost;
    int idx;

    Edge() = default;

    Edge(int from, int to, T cost = 1, int idx = -1) : from(from), to(to), cost(cost), idx(idx) {}

    operator int() const { return to; }
};
template <typename T = int> struct Graph {
    vector<vector<Edge<T>>> g;
    int es;

    Graph() = default;

    explicit Graph(int n) : g(n), es(0) {}

    size_t size() const { return g.size(); }

    void add_directed_edge(int from, int to, T cost = 1) { g[from].emplace_back(from, to, cost, es++); }

    void add_edge(int from, int to, T cost = 1) {
        g[from].emplace_back(from, to, cost, es);
        g[to].emplace_back(to, from, cost, es++);
    }

    void read(int M, int padding = -1, bool weighted = false, bool directed = false) {
        for (int i = 0; i < M; i++) {
            int a, b;
            cin >> a >> b;
            a += padding;
            b += padding;
            T c = T(1);
            if (weighted) cin >> c;
            if (directed)
                add_directed_edge(a, b, c);
            else
                add_edge(a, b, c);
        }
    }
};
#ifdef ONLINE_JUDGE
#define dump(...) (void(0))
#else
void debug() { cerr << endl; }
template <typename Head, typename... Tail> void debug(Head &&head, Tail &&... tail) {
    cerr << head;
    if (sizeof...(Tail)) cerr << ", ";
    debug(tail...);
}
#define dump(...) cerr << __LINE__ << ": " << #__VA_ARGS__ << " = ", debug(__VA_ARGS__)
#endif
struct rep {
    struct itr {
        ll v;
        itr(ll v) : v(v) {}
        void operator++() { ++v; }
        ll operator*() const { return v; }
        bool operator!=(itr i) const { return v < *i; }
    };
    ll l, r;
    rep(ll l, ll r) : l(l), r(r) {}
    rep(ll r) : rep(0, r) {}
    itr begin() const { return l; };
    itr end() const { return r; };
};
struct per {
    struct itr {
        ll v;
        itr(ll v) : v(v) {}
        void operator++() { --v; }
        ll operator*() const { return v; }
        bool operator!=(itr i) const { return v > *i; }
    };
    ll l, r;
    per(ll l, ll r) : l(l), r(r) {}
    per(ll r) : per(0, r) {}
    itr begin() const { return r - 1; };
    itr end() const { return l - 1; };
};
struct io_setup {
    static constexpr int PREC = 20;
    io_setup() {
        cout << fixed << setprecision(PREC);
        cerr << fixed << setprecision(PREC);
    };
} iOS;
template <ll MOD = 1000000007> struct modint {
    ll val;
    modint(ll val = 0) : val(val >= 0 ? val % MOD : (MOD - (-val) % MOD) % MOD) {}
    static ll mod() { return MOD; }
    modint inv() const {
        ll a = val, b = MOD, u = 1, v = 0, t;
        while (b > 0) {
            t = a / b;
            swap(a -= t * b, b);
            swap(u -= t * v, v);
        }
        return modint(u);
    }
    modint pow(ll k) const {
        modint ret = 1, mul = val;
        while (k) {
            if (k & 1) ret *= mul;
            mul *= mul;
            k >>= 1;
        }
        return ret;
    }
    modint &operator+=(const modint &a) {
        if ((val += a.val) >= MOD) val -= MOD;
        return *this;
    }
    modint &operator-=(const modint &a) {
        if ((val += MOD - a.val) >= MOD) val -= MOD;
        return *this;
    }
    modint &operator*=(const modint &a) {
        (val *= a.val) %= MOD;
        return *this;
    }
    modint &operator/=(const modint &a) { return *this *= a.inv(); }
    modint operator+() const { return *this; }
    modint operator-() const { return modint(-val); }
    friend bool operator==(const modint &a, const modint &b) { return a.val == b.val; }
    friend bool operator!=(const modint &a, const modint &b) { return rel_ops::operator!=(a, b); }
    friend modint operator+(const modint &a, const modint &b) { return modint(a) += b; }
    friend modint operator-(const modint &a, const modint &b) { return modint(a) -= b; }
    friend modint operator*(const modint &a, const modint &b) { return modint(a) *= b; }
    friend modint operator/(const modint &a, const modint &b) { return modint(a) /= b; }
    friend istream &operator>>(istream &is, modint &a) {
        ll val;
        is >> val;
        a = modint(val);
        return is;
    }
    friend ostream &operator<<(ostream &os, const modint &a) { return os << a.val; }
};

using td = tuple<double, double, double>;
td operator+(td a, td b) {
    auto [a0, a1, a2] = a;
    auto [b0, b1, b2] = b;
    return {a0 + b0, a1 + b1, a2 + b2};
}
td operator*(td a, double b) {
    auto [a0, a1, a2] = a;
    return {a0 * b, a1 * b, a2 * b};
}

int main() {
    ll a, b, c, n;
    cin >> a >> b >> c >> n;
    vector dp(a + 1, vector(b + 1, vector(c + 1, V<td>(n + 1))));
    vector calced(a + 1, vector(b + 1, vector(c + 1, V<double>(n + 1))));
    auto rec = [&](auto rec, ll a, ll b, ll c, ll n) -> td {
        if (n == 0) return {0, 0, 0};
        if (calced[a][b][c][n]) return dp[a][b][c][n];
        calced[a][b][c][n] = true;
        ll sum = a + b + c, all = sum * (sum - 1) / 2;
        ll ka = a * (a - 1) / 2, kb = b * (b - 1) / 2, kc = c * (c - 1) / 2;
        td ret = {0, 0, 0};
        if (ka > 0) ret = ret + (rec(rec, a - 1, b, c, n - 1) + td(1, 0, 0)) * ((double)ka / all);
        if (kb > 0) ret = ret + (rec(rec, a, b - 1, c, n - 1) + td(0, 1, 0)) * ((double)kb / all);
        if (kc > 0) ret = ret + (rec(rec, a, b, c - 1, n - 1) + td(0, 0, 1)) * ((double)kc / all);
        ret = ret + rec(rec, a, b, c, n - 1) * ((double)(all - ka - kb - kc) / all);
        return dp[a][b][c][n] = ret;
    };
    auto [x, y, z] = rec(rec, a, b, c, n);
    cout << x << " " << y << " " << z << " " << endl;
}
0