結果
問題 | No.1621 Sequence Inversions |
ユーザー | heno239 |
提出日時 | 2021-07-22 21:40:16 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,037 bytes |
コンパイル時間 | 2,001 ms |
コンパイル使用メモリ | 152,404 KB |
実行使用メモリ | 16,000 KB |
最終ジャッジ日時 | 2024-07-17 16:55:42 |
合計ジャッジ時間 | 3,501 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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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 | 9 ms
15,696 KB |
testcase_01 | AC | 9 ms
15,696 KB |
testcase_02 | AC | 8 ms
15,744 KB |
testcase_03 | AC | 9 ms
15,744 KB |
testcase_04 | AC | 9 ms
15,744 KB |
testcase_05 | AC | 9 ms
15,616 KB |
testcase_06 | AC | 9 ms
15,616 KB |
testcase_07 | AC | 9 ms
15,744 KB |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | AC | 10 ms
15,744 KB |
testcase_11 | WA | - |
testcase_12 | AC | 23 ms
15,828 KB |
testcase_13 | AC | 28 ms
15,828 KB |
testcase_14 | WA | - |
testcase_15 | AC | 34 ms
15,872 KB |
testcase_16 | AC | 26 ms
15,872 KB |
testcase_17 | AC | 31 ms
15,828 KB |
testcase_18 | AC | 25 ms
15,744 KB |
testcase_19 | AC | 9 ms
15,700 KB |
testcase_20 | AC | 14 ms
15,824 KB |
testcase_21 | AC | 33 ms
15,744 KB |
testcase_22 | AC | 32 ms
15,744 KB |
testcase_23 | AC | 33 ms
15,956 KB |
testcase_24 | AC | 9 ms
15,616 KB |
testcase_25 | AC | 9 ms
15,744 KB |
testcase_26 | AC | 9 ms
15,744 KB |
testcase_27 | AC | 9 ms
15,744 KB |
testcase_28 | AC | 9 ms
15,824 KB |
ソースコード
#pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #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<unordered_set> #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 = 998244353; 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 = mod) { if (n < 0) { ll res = mod_pow(x, -n, m); return mod_pow(res, m - 2, m); } if (abs(x) >= m)x %= m; if (x < 0)x += 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)); } modint operator/=(modint& a, modint b) { a = a / b; return a; } 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]; } modint combP(int a, int b) { if (a < 0 || b < 0 || a < b)return 0; return fact[a] * factinv[a - b]; } modint dp[105][10005]; void solve() { int n, k; cin >> n >> k; assert(n <= 100); vector<ll> a(n); rep(i, n) { cin >> a[i]; assert(a[i] <= 1000000000); } vector<int> c; sort(all(a)); rep(i, n) { int le = i; while (i + 1 < n && a[i] == a[i + 1])i++; c.push_back(i - le + 1); } vector<modint> cdp = { 1 }; int sum = 1; for (int i = 1; i < c.size(); i++) { rep(j, c[i] + 1)rep(k, sum * c[i] + 1)dp[j][k] = 0; dp[0][0] = 1; for (int num = 0; num <= sum; num++) { rep(j, c[i])rep(k, sum * c[i] + 1) { if (dp[j][k] == (modint)0)continue; assert(k + num <= sum * c[i]); dp[j + 1][k + num] += dp[j][k]; } } vector<modint> ndp(cdp.size() + sum * c[i]); rep(j, cdp.size())rep(k, sum * c[i] + 1) { modint val = cdp[j] * dp[c[i]][k]; ndp[j + k] += val; } swap(cdp, ndp); sum += c[i]; } modint ans = 0; if (k < cdp.size())ans = cdp[k]; cout << ans << "\n"; } signed main() { ios::sync_with_stdio(false); cin.tie(0); //cout << fixed << setprecision(12); //init_f(); //init(); //expr(); //int t; cin >> t; rep(i, t) solve(); return 0; }