結果

問題 No.133 カードゲーム
ユーザー morimario
提出日時 2021-02-08 08:59:05
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 3 ms / 5,000 ms
コード長 3,938 bytes
コンパイル時間 4,996 ms
コンパイル使用メモリ 252,776 KB
最終ジャッジ日時 2025-01-18 16:18:29
ジャッジサーバーID
（参考情報） 		judge3 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 19
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 #
プレゼンテーションモードにする

#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
using ll = long long; using ull = unsigned long long; using pil = pair<int, ll>; using pli = pair<ll, int>;
template <typename T> using piT = pair<int, T>; template <typename T> using pTi = pair<T, int>; template <typename T> using pTT = pair<T, T>;
using pii = pair<int, int>; using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>;
using pll = pair<ll, ll>; using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>;
using pbb = pair<bool, bool>; using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>;
using pcc = pair<char, char>; using vc = vector<char>; using vvc = vector<vc>; using vvvc = vector<vvc>;
using pss = pair<string, string>; using vs = vector<string>; using vvs = vector<vs>; using vvvs = vector<vvs>;
using pdd = pair<double, double>; using vd = vector<double>; using vvd = vector<vd>; using vvvd = vector<vvd>;
#define rep0(times) for(int counter = 0; counter < (int)(times); ++counter)
#define rep(counter, goal) for (int counter = 0; counter < (int)(goal); ++counter)
#define rep2(counter, start, goal) for (int counter = (int)(start); counter < (int)(goal); ++counter)
#define rep3(counter, start, goal) for (int counter = (int)(start); counter > (int)(goal); --counter)
#define all(container) begin(container), end(container)
template <typename T> bool chmax(T &x, const T &y) { if (x < y) { x = y; return true; } return false; }
template <typename T> bool chmin(T &x, const T &y) { if (x > y) { x = y; return true; } return false; }
void Yn(bool flag) { cout << (flag ? "Yes" : "No") << "\n"; }
void yn(bool flag) { cout << (flag ? "yes" : "no") << "\n"; }
void YN(bool flag) { cout << (flag ? "YES" : "NO") << "\n"; }
void set_prec(const int &digits) { cout << fixed << setprecision(digits); cerr << fixed << setprecision(digits); }
#include <atcoder/all>
using namespace atcoder;
void pr(const atcoder::modint1000000007 &obj) { cerr << obj.val(); };
void pr(const atcoder::modint998244353 &obj) { cerr << obj.val(); };
void pr(const atcoder::modint &obj) { cerr << obj.val(); };
template <typename T> void pr(const T &obj) { cerr << obj; }
template <typename T, typename ...Ts> void pr(const T &first, const Ts &...rest) { pr(first); pr(", "); pr(rest...); }
template <typename S, typename T> void pr(const pair<S, T> &pair) { pr("("); pr(pair.first); pr(", "); pr(pair.second); pr(")"); }
template <typename T> void pr(const vector<T> &vec) { pr("{"); for (T obj : vec) { pr(obj); pr(", "); } pr("}"); }
template <typename T> void pr(const vector<vector<T>> &vv) { pr("\n"); rep(index, vv.size()) { pr("["); pr(index); pr("]: "); pr(vv[index]); pr("\n"); 
    } }
template <typename T> void pr(const set<T> &vec) { pr("{"); for (T obj : vec) { pr(obj); pr(", "); } pr("}"); }
template <typename S, typename T> void pr(const map<S, T> &map) { pr("{"); for (pair<S, T> pair : map) { pr("("); pr(pair.first); pr(": "); pr(pair
    .second); pr("), "); } pr("}"); }
#define db(obj) cerr << #obj << ": "; pr(obj); cerr << " "
#define dl(obj) db(obj); cerr << "\n";
#define dm(...) cerr << "(" << #__VA_ARGS__ << "): ("; pr(__VA_ARGS__); cerr << ") "
#define dml(...) dm(__VA_ARGS__); cerr << "\n"
// const ll MOD = 1000000007;
// using mint = modint1000000007;
// const ll MOD = 998244353;
// using mint = modint998244353;
// using mint = modint;
vi A_cards, B_cards;
int A_wins = 0;
void permutation(int n) {
    assert(n >= 0);
    vi p; rep(i, n) p.push_back(i);
    do {
        int A_point = 0, B_point = 0;
        rep(j, n) {
            if (A_cards[j] > B_cards[p[j]]) ++A_point;
            else if (A_cards[j] < B_cards[p[j]]) ++B_point;
        }
        if (A_point > B_point) ++ A_wins;
    } while (next_permutation(all(p)));
}
int main() {
    int N; cin >> N;
    A_cards = B_cards = vi(N);
    rep(i, N) cin >> A_cards[i];
    rep(i, N) cin >> B_cards[i];
    permutation(N);
    double ans = A_wins;
    rep2(i, 1, N + 1) ans /= i;
    cout << ans << endl;
}
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