結果
問題 | No.298 話の伝達 |
ユーザー | heno239 |
提出日時 | 2020-08-23 12:44:08 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 525 ms / 5,000 ms |
コード長 | 3,983 bytes |
コンパイル時間 | 1,491 ms |
コンパイル使用メモリ | 127,452 KB |
実行使用メモリ | 24,192 KB |
最終ジャッジ日時 | 2024-10-15 18:08:17 |
合計ジャッジ時間 | 3,414 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
(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 | 6 ms
7,680 KB |
testcase_01 | AC | 5 ms
7,808 KB |
testcase_02 | AC | 5 ms
7,552 KB |
testcase_03 | AC | 5 ms
7,680 KB |
testcase_04 | AC | 5 ms
7,808 KB |
testcase_05 | AC | 119 ms
24,064 KB |
testcase_06 | AC | 5 ms
7,936 KB |
testcase_07 | AC | 5 ms
7,680 KB |
testcase_08 | AC | 5 ms
7,808 KB |
testcase_09 | AC | 5 ms
7,808 KB |
testcase_10 | AC | 7 ms
8,192 KB |
testcase_11 | AC | 37 ms
24,192 KB |
testcase_12 | AC | 17 ms
15,872 KB |
testcase_13 | AC | 63 ms
24,064 KB |
testcase_14 | AC | 44 ms
15,744 KB |
testcase_15 | AC | 5 ms
7,680 KB |
testcase_16 | AC | 525 ms
24,064 KB |
testcase_17 | AC | 8 ms
8,064 KB |
testcase_18 | AC | 90 ms
12,032 KB |
testcase_19 | AC | 5 ms
7,680 KB |
testcase_20 | AC | 207 ms
16,000 KB |
ソースコード
#include<iostream> #include<string> #include<cstdio> #include<vector> #include<cmath> #include<algorithm> #include<functional> #include<iomanip> #include<queue> #include<ciso646> #include<random> #include<map> #include<set> #include<bitset> #include<stack> #include<unordered_map> #include<utility> #include<cassert> #include<complex> #include<numeric> #include<array> using namespace std; //#define int long long typedef long long ll; typedef unsigned long long ul; typedef unsigned int ui; constexpr ll mod = 1000000007; const ll INF = mod * mod; typedef pair<int, int>P; #define stop char nyaa;cin>>nyaa; #define rep(i,n) for(int i=0;i<n;i++) #define per(i,n) for(int i=n-1;i>=0;i--) #define Rep(i,sta,n) for(int i=sta;i<n;i++) #define rep1(i,n) for(int i=1;i<=n;i++) #define per1(i,n) for(int i=n;i>=1;i--) #define Rep1(i,sta,n) for(int i=sta;i<=n;i++) #define all(v) (v).begin(),(v).end() typedef pair<ll, ll> LP; typedef long double ld; typedef pair<ld, ld> LDP; const ld eps = 1e-12; const ld pi = acosl(-1.0); ll mod_pow(ll x, ll n, ll m) { ll res = 1; while (n) { if (n & 1)res = res * x % m; x = x * x % m; n >>= 1; } return res; } struct modint { ll n; modint() :n(0) { ; } modint(ll m) :n(m) { if (n >= mod)n %= mod; else if (n < 0)n = (n % mod + mod) % mod; } operator int() { return n; } }; bool operator==(modint a, modint b) { return a.n == b.n; } modint operator+=(modint& a, modint b) { a.n += b.n; if (a.n >= mod)a.n -= mod; return a; } modint operator-=(modint& a, modint b) { a.n -= b.n; if (a.n < 0)a.n += mod; return a; } modint operator*=(modint& a, modint b) { a.n = ((ll)a.n * b.n) % mod; return a; } modint operator+(modint a, modint b) { return a += b; } modint operator-(modint a, modint b) { return a -= b; } modint operator*(modint a, modint b) { return a *= b; } modint operator^(modint a, ll n) { if (n == 0)return modint(1); modint res = (a * a) ^ (n / 2); if (n % 2)res = res * a; return res; } ll inv(ll a, ll p) { return (a == 1 ? 1 : (1 - p * inv(p % a, a)) / a + p); } modint operator/(modint a, modint b) { return a * modint(inv(b, mod)); } const int max_n = 1 << 18; modint fact[max_n], factinv[max_n]; void init_f() { fact[0] = modint(1); for (int i = 0; i < max_n - 1; i++) { fact[i + 1] = fact[i] * modint(i + 1); } factinv[max_n - 1] = modint(1) / fact[max_n - 1]; for (int i = max_n - 2; i >= 0; i--) { factinv[i] = factinv[i + 1] * modint(i + 1); } } modint comb(int a, int b) { if (a < 0 || b < 0 || a < b)return 0; return fact[a] * factinv[b] * factinv[a - b]; } struct edge { int to; ld cost; }; ld dp[1 << 20]; void solve() { int n, m; cin >> n >> m; vector<vector<edge>> G(n); rep(i, m) { int a, b; ld c; cin >> a >> b >> c; c /= 100.0; G[a].push_back({ b,c }); } vector<bool> used(n); queue<int> q; q.push(0); used[0] = true; vector<vector<edge>> rG(n); vector<pair<P, ld>> memo; while (!q.empty()) { int id = q.front(); q.pop(); for (edge e : G[id]) { rG[e.to].push_back({ id,e.cost }); if (!used[e.to]) { used[e.to] = true; q.push(e.to); } } } fill(all(used), false); used[0] = true; while (true) { bool b = false; rep(i, n) { if (used[i])continue; bool f = true; for (edge e : rG[i]) { if (!used[e.to])f = false; } if (f) { b = true; used[i] = true; for (edge e : rG[i]) { memo.push_back({ {e.to,i},e.cost }); } } } if (!b)break; } dp[1] = 1; rep(i, memo.size()) { int a = memo[i].first.first; int b = memo[i].first.second; ld c = memo[i].second; per(j, (1 << n)) { if (j & (1 << b))continue; if (j & (1 << a)) { dp[j ^ (1 << b)] += dp[j] * c; dp[j] *= (1 - c); } } } ld ans = 0; rep(j, (1 << n))if(j&(1<<n-1))ans += dp[j]; cout << ans << "\n"; } signed main() { ios::sync_with_stdio(false); cin.tie(0); cout << fixed << setprecision(10); //init_f(); //expr(); //int t; cin >> t; rep(i, t) //while (cin >> n >> m>>s1>>s2>>t, n) solve(); return 0; }