結果
問題 | No.1554 array_and_me |
ユーザー | opt |
提出日時 | 2021-06-18 21:38:18 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 50 ms / 2,000 ms |
コード長 | 6,151 bytes |
コンパイル時間 | 4,617 ms |
コンパイル使用メモリ | 272,680 KB |
実行使用メモリ | 10,244 KB |
最終ジャッジ日時 | 2024-06-22 20:02:04 |
合計ジャッジ時間 | 6,207 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | 1 ms
6,812 KB |
testcase_01 | AC | 17 ms
6,940 KB |
testcase_02 | AC | 17 ms
6,944 KB |
testcase_03 | AC | 16 ms
6,944 KB |
testcase_04 | AC | 17 ms
6,944 KB |
testcase_05 | AC | 16 ms
6,944 KB |
testcase_06 | AC | 44 ms
9,092 KB |
testcase_07 | AC | 44 ms
9,224 KB |
testcase_08 | AC | 44 ms
9,348 KB |
testcase_09 | AC | 50 ms
10,244 KB |
testcase_10 | AC | 44 ms
8,968 KB |
testcase_11 | AC | 16 ms
7,796 KB |
testcase_12 | AC | 16 ms
7,920 KB |
testcase_13 | AC | 16 ms
8,440 KB |
testcase_14 | AC | 16 ms
9,588 KB |
testcase_15 | AC | 16 ms
8,056 KB |
testcase_16 | AC | 8 ms
6,940 KB |
testcase_17 | AC | 8 ms
6,940 KB |
testcase_18 | AC | 8 ms
6,944 KB |
testcase_19 | AC | 8 ms
6,944 KB |
testcase_20 | AC | 7 ms
6,940 KB |
testcase_21 | AC | 27 ms
6,944 KB |
testcase_22 | AC | 27 ms
6,940 KB |
testcase_23 | AC | 28 ms
6,944 KB |
testcase_24 | AC | 28 ms
6,940 KB |
testcase_25 | AC | 28 ms
6,944 KB |
testcase_26 | AC | 36 ms
6,940 KB |
testcase_27 | AC | 36 ms
6,940 KB |
testcase_28 | AC | 36 ms
6,940 KB |
testcase_29 | AC | 36 ms
6,944 KB |
testcase_30 | AC | 36 ms
6,940 KB |
testcase_31 | AC | 36 ms
6,944 KB |
testcase_32 | AC | 36 ms
6,940 KB |
testcase_33 | AC | 37 ms
6,940 KB |
testcase_34 | AC | 37 ms
6,940 KB |
testcase_35 | AC | 37 ms
6,944 KB |
testcase_36 | AC | 34 ms
6,940 KB |
testcase_37 | AC | 35 ms
6,944 KB |
testcase_38 | AC | 36 ms
6,940 KB |
testcase_39 | AC | 36 ms
6,944 KB |
testcase_40 | AC | 36 ms
6,944 KB |
testcase_41 | AC | 20 ms
6,940 KB |
ソースコード
#include<bits/stdc++.h> using namespace std; #include<atcoder/all> using namespace atcoder; // input and output of modint istream &operator>>(istream &is, modint998244353 &a) { long long v; is >> v; a = v; return is; } ostream &operator<<(ostream &os, const modint998244353 &a) { return os << a.val(); } istream &operator>>(istream &is, modint1000000007 &a) { long long v; is >> v; a = v; return is; } ostream &operator<<(ostream &os, const modint1000000007 &a) { return os << a.val(); } template<int m> istream &operator>>(istream &is, static_modint<m> &a) { long long v; is >> v; a = v; return is; } template<int m> ostream &operator<<(ostream &os, const static_modint<m> &a) { return os << a.val(); } template<int m> istream &operator>>(istream &is, dynamic_modint<m> &a) { long long v; is >> v; a = v; return is; } template<int m> ostream &operator<<(ostream &os, const dynamic_modint<m> &a) { return os << a.val(); } #define rep_(i, a_, b_, a, b, ...) for (int i = (a), lim##i = (b); i < lim##i; ++i) #define rep(i, ...) rep_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__) #define drep_(i, a_, b_, a, b, ...) for (int i = (a)-1, lim##i = (b); i >= lim##i; --i) #define drep(i, ...) drep_(i, __VA_ARGS__, __VA_ARGS__, __VA_ARGS__, 0) #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() #ifdef LOCAL void debug_out() { cerr << endl; } template <class Head, class... Tail> void debug_out(Head H, Tail... T) { cerr << ' ' << H; debug_out(T...); } #define debug(...) cerr << 'L' << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__) #define dump(x) cerr << 'L' << __LINE__ << " " << #x << " = " << (x) << endl #else #define debug(...) (void(0)) #define dump(x) (void(0)) #endif template<class T> using V = vector<T>; template<class T> using VV = V<V<T>>; using ll = long long; using ld = long double; using Vi = V<int>; using VVi = VV<int>; using Vl = V<ll>; using VVl = VV<ll>; using Vd = V<ld>; using VVd = VV<ld>; using Vb = V<bool>; using VVb = VV<bool>; template<class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>; template<class T> vector<T> make_vec(size_t n, T a) { return vector<T>(n, a); } template<class... Ts> auto make_vec(size_t n, Ts... ts) { return vector<decltype(make_vec(ts...))>(n, make_vec(ts...)); } template<class T> inline int sz(const T &x) { return x.size(); } template<class T> inline bool chmin(T &a, const T b) { if (a > b) { a = b; return true; } return false; } template<class T> inline bool chmax(T &a, const T b) { if (a < b) { a = b; return true; } return false; } template<class T1, class T2> istream &operator>>(istream &is, pair<T1, T2> &p) { is >> p.first >> p.second; return is; } template<class T1, class T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p) { os << '(' << p.first << ", " << p.second << ')'; return os; } template<class T, size_t n> istream &operator>>(istream &is, array<T, n> &v) { for (auto &e : v) is >> e; return is; } template<class T, size_t n> ostream &operator<<(ostream &os, const array<T, n> &v) { for (auto &e : v) os << e << ' '; return os; } template<class T> istream &operator>>(istream &is, vector<T> &v) { for (auto &e : v) is >> e; return is; } template<class T> ostream &operator<<(ostream &os, const vector<T> &v) { for (auto &e : v) os << e << ' '; return os; } template<class T> istream &operator>>(istream &is, deque<T> &v) { for (auto &e : v) is >> e; return is; } template<class T> ostream &operator<<(ostream &os, const deque<T> &v) { for (auto &e : v) os << e << ' '; return os; } template<class T> inline void deduplicate(vector<T> &a) { sort(all(a)); a.erase(unique(all(a)), a.end()); } template<class T> inline int count_between(const vector<T> &a, T l, T r) { return lower_bound(all(a), r) - lower_bound(all(a), l); } // [l, r) inline ll ceil_div(const ll x, const ll y) { return (x+y-1) / y; } // ceil(x/y) inline int floor_log2(const ll x) { assert(x > 0); return 63 - __builtin_clzll(x); } // floor(log2(x)) inline int ceil_log2(const ll x) { assert(x > 0); return (x == 1) ? 0 : 64 - __builtin_clzll(x-1); } // ceil(log2(x)) inline int popcount(const ll x) { return __builtin_popcountll(x); } inline void fail() { cout << -1 << '\n'; exit(0); } struct fast_ios { fast_ios(){ cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_; // constexpr int INF = numeric_limits<int>::max() >> 1; // constexpr ll INFll = numeric_limits<ll>::max() >> 1; // constexpr ld EPS = 1e-10; // const ld PI = acos(-1.0); using mint = modint998244353; // using mint = modint1000000007; // using mint = modint; // using Vm = V<mint>; using VVm = V<Vm>; // O(m + log mod) // only for mod > m template<class T> struct factorial { private: int MAX; vector<T> _fac, _invf; // vector<T> _dfac; public: factorial(int m = -1) { if (m < 0) return; MAX = m; _fac.assign(m+1, 1); _invf.assign(m+1, 1); rep(i, 2, m+1) _fac[i] = _fac[i-1] * i; _invf[m] /= _fac[m]; drep(i, m+1, 3) _invf[i-1] = _invf[i] * i; // _dfac.assign(m+1, 1); // rep(i, 2, m) _dfac[i] = _dfac[i-2] * i; } T fac(int n) const { return _fac[n]; } T inv_fac(int n) const { return _invf[n]; } // T double_fac(int n) const { return _dfac[n]; } T binom(int n, int k) const { if (k < 0 || n < k) return 0; assert(n <= MAX); return _fac[n] * _invf[k] * _invf[n-k]; } T perm(int n, int k) const { if (k < 0 || n < k) return 0; assert(n <= MAX); return _fac[n] * _invf[n-k]; } // 重複組合せ (n 個の元から重複を許して k 個選ぶ方法の数) は binom(n+k-1, k) }; mint solve() { int n, k; cin >> n >> k; factorial<mint> fc(k); Vi a(n); cin >> a; int S = accumulate(all(a), 0); priority_queue<pair<ld, int>> pq; rep(i, n) pq.emplace(ld(a[i]) / S, i); Vi x(n); rep(_, k) { auto [z, i] = pq.top(); pq.pop(); x[i]++; pq.emplace(ld(a[i]) / S / (x[i]+1), i); } mint ans = fc.fac(k) / mint(S).pow(k); rep(i, n) { ans *= mint(a[i]).pow(x[i]); ans *= fc.inv_fac(x[i]); } return ans; } int main() { // solve(); int t; cin >> t; rep(i, t) cout << solve() << '\n'; }