結果
問題 | No.2388 At Least K-Characters |
ユーザー | Kude |
提出日時 | 2023-07-21 22:33:35 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2,255 ms / 4,000 ms |
コード長 | 2,406 bytes |
コンパイル時間 | 2,630 ms |
コンパイル使用メモリ | 227,252 KB |
実行使用メモリ | 64,456 KB |
最終ジャッジ日時 | 2024-07-05 03:51:15 |
合計ジャッジ時間 | 12,586 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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 | 155 ms
63,936 KB |
testcase_01 | AC | 155 ms
63,940 KB |
testcase_02 | AC | 163 ms
63,948 KB |
testcase_03 | AC | 155 ms
63,940 KB |
testcase_04 | AC | 158 ms
64,068 KB |
testcase_05 | AC | 156 ms
63,816 KB |
testcase_06 | AC | 152 ms
63,920 KB |
testcase_07 | AC | 147 ms
63,948 KB |
testcase_08 | AC | 159 ms
63,944 KB |
testcase_09 | AC | 157 ms
63,940 KB |
testcase_10 | AC | 155 ms
63,948 KB |
testcase_11 | AC | 154 ms
63,936 KB |
testcase_12 | AC | 155 ms
64,072 KB |
testcase_13 | AC | 150 ms
64,068 KB |
testcase_14 | AC | 154 ms
63,940 KB |
testcase_15 | AC | 156 ms
63,940 KB |
testcase_16 | AC | 265 ms
64,320 KB |
testcase_17 | AC | 2,255 ms
64,352 KB |
testcase_18 | AC | 197 ms
64,348 KB |
testcase_19 | AC | 184 ms
64,456 KB |
testcase_20 | AC | 183 ms
64,452 KB |
testcase_21 | AC | 183 ms
64,324 KB |
testcase_22 | AC | 188 ms
64,324 KB |
testcase_23 | AC | 188 ms
64,452 KB |
testcase_24 | AC | 187 ms
64,452 KB |
testcase_25 | AC | 182 ms
64,328 KB |
testcase_26 | AC | 178 ms
64,452 KB |
testcase_27 | AC | 178 ms
64,352 KB |
testcase_28 | AC | 179 ms
64,348 KB |
testcase_29 | AC | 179 ms
64,324 KB |
testcase_30 | AC | 180 ms
64,452 KB |
testcase_31 | AC | 179 ms
64,268 KB |
testcase_32 | AC | 182 ms
64,220 KB |
testcase_33 | AC | 184 ms
64,216 KB |
testcase_34 | AC | 177 ms
64,452 KB |
testcase_35 | AC | 180 ms
64,452 KB |
testcase_36 | AC | 168 ms
64,452 KB |
コンパイルメッセージ
main.cpp:49:6: warning: '{anonymous}::mint {anonymous}::perm(int, int)' defined but not used [-Wunused-function] 49 | mint perm(int n, int k) { | ^~~~ main.cpp:48:6: warning: '{anonymous}::mint {anonymous}::fact(int)' defined but not used [-Wunused-function] 48 | mint fact(int n) {return Fact[n];} | ^~~~ main.cpp:44:6: warning: '{anonymous}::mint {anonymous}::icomb(int, int)' defined but not used [-Wunused-function] 44 | mint icomb(int n, int k) { | ^~~~~
ソースコード
#include<bits/stdc++.h> namespace { #pragma GCC diagnostic ignored "-Wunused-function" #include<atcoder/all> #pragma GCC diagnostic warning "-Wunused-function" using namespace std; using namespace atcoder; #define rep(i,n) for(int i = 0; i < (int)(n); i++) #define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--) #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; } template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; } using ll = long long; using P = pair<int,int>; using VI = vector<int>; using VVI = vector<VI>; using VL = vector<ll>; using VVL = vector<VL>; using mint = modint998244353; constexpr int FACT_SIZE = 1000000; mint Fact[FACT_SIZE + 1]; mint iFact[FACT_SIZE + 1]; const auto fact_init = [] { Fact[0] = mint::raw(1); for(int i = 1; i <= FACT_SIZE; ++i) { Fact[i] = Fact[i-1] * i; } iFact[FACT_SIZE] = Fact[FACT_SIZE].inv(); for(int i = FACT_SIZE; i; --i) { iFact[i-1] = iFact[i] * i; } return false; }(); mint comb(int n, int k) { if (k == 0) return mint::raw(1); assert(n >= 0 && k >= 0); if (k > n) return mint::raw(0); return Fact[n] * iFact[n - k] * iFact[k]; } mint icomb(int n, int k) { return iFact[n] * Fact[n - k] * Fact[k]; } mint fact(int n) {return Fact[n];} mint perm(int n, int k) { assert(0 <= n); return Fact[n] * iFact[n - k]; } mint t[500010][27]; } int main() { ios::sync_with_stdio(false); cin.tie(0); rep(x, 27) { mint acc; mint xk = 1; rep(i, 500010) { t[i][x] = acc; acc += xk; xk *= x; } } int n, m, k; cin >> n >> m >> k; string s; cin >> s; int seen = 0; mint ans; rep(i, n) { int pc = __builtin_popcount(seen); int x = s[i] - 'a'; int c1 = __builtin_popcount(seen & ((1 << x) - 1)); int c2 = x - c1; if (pc >= k) ans++; for(auto [s, c] : {pair(pc, c1), pair(pc + 1, c2)}) { mint d[27]; int rest = m - (i + 1); for(int add = 0; add <= 26 - s; add++) { mint z = t[rest + 1][s + add]; mint v = c * comb(26 - s, add) * z; rep(a, add) v -= d[a] * comb(26 - s - a, add - a); d[add] = v; if (s + add >= k) ans += v; } } seen |= 1 << x; } cout << ans.val() << endl; }