結果
| 問題 | No.2389 Cheating Code Golf |
| ユーザー |
 dyktr_06
|
| 提出日時 | 2023-07-22 00:14:10 |
| 言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 67 ms / 2,000 ms |
| コード長 | 5,429 bytes |
| コンパイル時間 | 21,999 ms |
| コンパイル使用メモリ | 358,516 KB |
| 最終ジャッジ日時 | 2025-02-15 17:50:21 |
|
ジャッジサーバーID （参考情報） |
judge1 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 50 |
ソースコード
#pragma GCC target("avx2")#pragma GCC optimize("O3")#pragma GCC optimize("unroll-loops")#include <bits/stdc++.h>#include <atcoder/all>using namespace std;using namespace atcoder;#define overload4(_1, _2, _3, _4, name, ...) name#define rep1(n) for(int i = 0; i < (int)(n); ++i)#define rep2(i, n) for(int i = 0; i < (int)(n); ++i)#define rep3(i, a, b) for(int i = (a); i < (int)(b); ++i)#define rep4(i, a, b, c) for(int i = (a); i < (int)(b); i += (c))#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; --i)#define ALL(a) a.begin(), a.end()#define Sort(a) sort(a.begin(), a.end())#define RSort(a) sort(a.rbegin(), a.rend())typedef long long int ll;typedef unsigned long long ul;typedef long double ld;typedef vector<int> vi;typedef vector<long long> vll;typedef vector<char> vc;typedef vector<string> vst;typedef vector<double> vd;typedef vector<long double> vld;typedef pair<long long, long long> P;template<class T> long long sum(const T& a){ return accumulate(a.begin(), a.end(), 0LL); }template<class T> auto min(const T& a){ return *min_element(a.begin(), a.end()); }template<class T> auto max(const T& a){ return *max_element(a.begin(), a.end()); }const long long MINF = 0x7fffffffffff;const long long INF = 0x1fffffffffffffff;const long long MOD = 998244353;const long double EPS = 1e-9;const long double PI = acos(-1);template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }template<typename T1, typename T2> istream &operator>>(istream &is, pair<T1, T2> &p){ is >> p.first >> p.second; return is; }template<typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p){ os << "(" << p.first << ", " << p.second << ")"; returnos; }template<typename T> istream &operator>>(istream &is, vector<T> &v){ for(T &in : v) is >> in; return is; }template<typename T> ostream &operator<<(ostream &os, const vector<T> &v){ for(int i = 0; i < (int) v.size(); ++i){ os << v[i] << (i + 1 != (int) v.size() ? " " : ""); } return os; }template <typename T, typename S> ostream &operator<<(ostream &os, const map<T, S> &mp){ for(auto &[key, val] : mp){ os << key << ":" << val << " ";} return os; }template <typename T> ostream &operator<<(ostream &os, const set<T> &st){ auto itr = st.begin(); for(int i = 0; i < (int)st.size(); ++i){ os << *itr<< (i + 1 != (int)st.size() ? " " : ""); itr++; } return os; }template <typename T> ostream &operator<<(ostream &os, const multiset<T> &st){ auto itr = st.begin(); for(int i = 0; i < (int)st.size(); ++i){ os <<*itr << (i + 1 != (int)st.size() ? " " : ""); itr++; } return os; }template <typename T> ostream &operator<<(ostream &os, queue<T> q){ while(q.size()){ os << q.front() << " "; q.pop(); } return os; }template <typename T> ostream &operator<<(ostream &os, deque<T> q){ while(q.size()){ os << q.front() << " "; q.pop_front(); } return os; }template <typename T> ostream &operator<<(ostream &os, stack<T> st){ while(st.size()){ os << st.top() << " "; st.pop(); } return os; }template <class T, class Container, class Compare> ostream &operator<<(ostream &os, priority_queue<T, Container, Compare> pq){ while(pq.size()){ os<< pq.top() << " "; pq.pop(); } return os; }template<class T, class U> inline T vin(T& vec, U n) { vec.resize(n); for(int i = 0; i < (int) n; ++i) cin >> vec[i]; return vec; }template<class T> inline void vout(T vec, string s = "\n"){ for(auto x : vec) cout << x << s; }template<class... T> void in(T&... a){ (cin >> ... >> a); }void out(){ cout << '\n'; }template<class T, class... Ts> void out(const T& a, const Ts&... b){ cout << a; (cout << ... << (cout << ' ', b)); cout << '\n'; }template<class T, class U> void inGraph(vector<vector<T>>& G, U n, U m, bool directed = false){ G.resize(n); for(int i = 0; i < m; ++i){ int a, b;cin >> a >> b; a--, b--; G[a].push_back(b); if(!directed) G[b].push_back(a); } }ld dp[13][1 << 12][41];ll n, m;vector<ld> a, b, p;void input(){in(n, m);a.resize(n);b.resize(n);p.resize(n);rep(i, n) in(a[i], b[i], p[i]);}void solve(){vector<pair<ld, ll>> sr(n);rep(i, n){ld w = (a[i] - b[i]) / (a[i] * b[i]);if(p[i] != 1) w /= (p[i] - 1);else w = INF;sr[i] = make_pair(w, i);}RSort(sr);dp[0][0][0] = 1;rep(i, n){auto [w, key] = sr[i];rep(j, 1 << n){rep(k, m + 1){ld q = 1; q -= (ld) 1 / p[key];if(k + 1 <= m && (a[key] - b[key]) > 0){dp[i + 1][j | (1 << i)][k] += dp[i][j][k] / p[key];dp[i][j][k + 1] += dp[i][j][k] * q;}else{dp[i + 1][j][k] += dp[i][j][k];}}}}ld ans = 0;rep(i, 1 << n){ld s = 0;rep(j, n){auto [w, key] = sr[j];if(i & (1 << j)){s += (ld) 1 / b[key];}else{s += (ld) 1 / a[key];}}rep(j, m + 1){ans += s * dp[n][i][j];}}out(ans);}int main(){ios::sync_with_stdio(false);cin.tie(nullptr);cout << fixed << setprecision(20);input();solve();}