結果
問題 | No.2243 Coaching Schedule |
ユーザー | akua |
提出日時 | 2023-03-11 01:38:13 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2,175 ms / 4,000 ms |
コード長 | 5,936 bytes |
コンパイル時間 | 6,207 ms |
コンパイル使用メモリ | 235,232 KB |
実行使用メモリ | 22,284 KB |
最終ジャッジ日時 | 2024-09-18 05:58:55 |
合計ジャッジ時間 | 20,981 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
(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 | 37 ms
14,900 KB |
testcase_01 | AC | 37 ms
14,908 KB |
testcase_02 | AC | 37 ms
15,016 KB |
testcase_03 | AC | 35 ms
15,176 KB |
testcase_04 | AC | 37 ms
15,380 KB |
testcase_05 | AC | 128 ms
22,284 KB |
testcase_06 | AC | 301 ms
21,692 KB |
testcase_07 | AC | 307 ms
21,692 KB |
testcase_08 | AC | 291 ms
21,820 KB |
testcase_09 | AC | 449 ms
21,664 KB |
testcase_10 | AC | 445 ms
21,536 KB |
testcase_11 | AC | 452 ms
21,660 KB |
testcase_12 | AC | 2,175 ms
21,716 KB |
testcase_13 | AC | 1,887 ms
21,836 KB |
testcase_14 | AC | 1,838 ms
21,716 KB |
testcase_15 | AC | 1,866 ms
21,712 KB |
testcase_16 | AC | 82 ms
21,688 KB |
testcase_17 | AC | 114 ms
17,084 KB |
testcase_18 | AC | 206 ms
20,284 KB |
testcase_19 | AC | 402 ms
20,948 KB |
testcase_20 | AC | 387 ms
18,876 KB |
testcase_21 | AC | 141 ms
18,228 KB |
testcase_22 | AC | 120 ms
17,920 KB |
testcase_23 | AC | 45 ms
15,760 KB |
testcase_24 | AC | 196 ms
18,792 KB |
testcase_25 | AC | 50 ms
15,912 KB |
testcase_26 | AC | 78 ms
16,804 KB |
testcase_27 | AC | 222 ms
19,052 KB |
testcase_28 | AC | 53 ms
15,904 KB |
testcase_29 | AC | 269 ms
20,388 KB |
testcase_30 | AC | 268 ms
21,180 KB |
testcase_31 | AC | 264 ms
21,400 KB |
testcase_32 | AC | 120 ms
17,544 KB |
testcase_33 | AC | 82 ms
17,004 KB |
testcase_34 | AC | 211 ms
20,284 KB |
testcase_35 | AC | 276 ms
20,636 KB |
testcase_36 | AC | 247 ms
20,980 KB |
ソースコード
#pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include <atcoder/all> #include <iostream> // cout, endl, cin #include <string> // string, to_string, stoi #include <vector> // vector #include <algorithm> // min, max, swap, sort, reverse, lower_bound, upper_bound #include <utility> // pair, make_pair #include <tuple> // tuple, make_tuple #include <cstdint> // int64_t, int*_t #include <cstdio> // printf #include <map> // map #include <queue> // queue, priority_queue #include <set> // set #include <stack> // stack #include <deque> // deque #include <unordered_map> // unordered_map #include <unordered_set> // unordered_set #include <bitset> // bitset #include <cctype> // isupper, islower, isdigit, toupper, tolower #include <math.h> #include <iomanip> #include <functional> using namespace std; using namespace atcoder; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define repi(i, a, b) for (int i = (int)(a); i < (int)(b); i++) typedef long long ll; typedef unsigned long long ull; const ll inf=1e18; using graph = vector<vector<int> > ; using P= pair<ll,ll>; using vi=vector<int>; using vvi=vector<vi>; using vll=vector<ll>; using vvll=vector<vll>; using vp=vector<P>; using vvp=vector<vp>; using vd=vector<double>; using vvd =vector<vd>; //string T="ABCDEFGHIJKLMNOPQRSTUVWXYZ"; //string S="abcdefghijklmnopqrstuvwxyz"; //g++ main.cpp -std=c++17 -I . //cout <<setprecision(20); //cout << fixed << setprecision(10); //cin.tie(0); ios::sync_with_stdio(false); const double PI = acos(-1); int vx[]={0,1,0,-1,-1,1,1,-1},vy[]={1,0,-1,0,1,1,-1,-1}; void putsYes(bool f){cout << (f?"Yes":"No") << endl;} void putsYES(bool f){cout << (f?"YES":"NO") << endl;} void putsFirst(bool f){cout << (f?"First":"Second") << endl;} void debug(int test){cout << "TEST" << " " << test << endl;} ll pow_pow(ll x,ll n,ll mod){ if(n==0) return 1; x%=mod; ll res=pow_pow(x*x%mod,n/2,mod); if(n&1)res=res*x%mod; return res; } ll gcd(ll x,ll y){ if(y==0)return x; return gcd(y,x%y); } ll lcm(ll x,ll y){ return ll(x/gcd(x,y))*y; } template<class T> bool chmin(T& a, T b) { if (a > b) { a = b; return true; } else return false; } template<class T> bool chmax(T& a, T b) { if (a < b) { a = b; return true; } else return false; } // https://youtu.be/L8grWxBlIZ4?t=9858 // https://youtu.be/ERZuLAxZffQ?t=4807 : optimize // https://youtu.be/8uowVvQ_-Mo?t=1329 : division ll mod =998244353; ll sqrt_(ll x) { ll l = 0, r = ll(3e9)+1; while (l+1<r) { ll c = (l+r)/2; if (c*c <= x) l = c; else r = c; } return l; } int valid(int x,int y,int h,int w){ if(x>=0 && y>=0 && x<h && y<w)return 1; else return 0; } struct edge{ int to; ll cost; edge(int to,ll cost) : to(to),cost(cost){} }; // https://youtu.be/ylWYSurx10A?t=2352 template<typename T> struct Matrix { int h, w; vector<vector<T>> d; Matrix() {} Matrix(int h, int w, T val=0): h(h), w(w), d(h, vector<T>(w,val)) {} Matrix& unit() { // assert(h == w); rep(i,h) d[i][i] = 1; return *this; } const vector<T>& operator[](int i) const { return d[i];} vector<T>& operator[](int i) { return d[i];} Matrix operator*(const Matrix& a) const { // assert(w == a.h); Matrix r(h, a.w); rep(i,h)rep(k,w)rep(j,a.w) { r[i][j] += d[i][k]*a[k][j]; } return r; } Matrix pow(long long t) const { // assert(h == w); if (!t) return Matrix(h,h).unit(); if (t == 1) return *this; Matrix r = pow(t>>1); r = r*r; if (t&1) r = r*(*this); return r; } // https://youtu.be/-j02o6__jgs?t=11273 /* mint only mint det() { assert(h == w); mint res = 1; rep(k,h) { for (int i = k; i < h; ++i) { if (d[i][k] == 0) continue; if (i != k) { swap(d[i],d[k]); res = -res; } } if (d[k][k] == 0) return 0; res *= d[k][k]; mint inv = mint(1)/d[k][k]; rep(j,h) d[k][j] *= inv; for (int i = k+1; i < h; ++i) { mint c = d[i][k]; for (int j = k; j < h; ++j) d[i][j] -= d[k][j]*c; } } return res; } //*/ }; int MOD = 998244353; vll fact, fact_inv, inv; void init_nCk(int n) { fact.resize(n+1); fact_inv.resize(n+1); inv.resize(n+1); fact[0] = fact[1] = 1; fact_inv[0] = fact_inv[1] = 1; inv[1] = 1; for (int i = 2; i<=n; i++) { fact[i] = fact[i - 1] * i % MOD; inv[i] = MOD - inv[MOD % i] * (MOD / i) % MOD; fact_inv[i] = fact_inv[i - 1] * inv[i] % MOD; } } ll nCk(int n, int k) { if(n<k)return 0; return fact[n] * (fact_inv[k] * fact_inv[n - k] % MOD) % MOD; } using ve=vector<edge>; using vve=vector<ve>; using mint=modint998244353; using vm=vector<mint>; void solve(int test){ init_nCk(500000); int m,n; cin >> m >> n; vi a(n);rep(i,n)cin >> a[i]; vi cnt(m+1); rep(i,n)cnt[a[i]]++; vp p; { vi v; for(int i=1; i<=m; i++)if(cnt[i])v.push_back(cnt[i]); vi cnt2(n+1); for(auto u:v)cnt2[u]++; for(int i=1; i<=n; i++)if(cnt2[i])p.push_back(P(i,cnt2[i])); } vm kai(n+1,1);for(int i=1; i<=n; i++)kai[i]=kai[i-1]*i; vm kaiinv(n+1,1);for(int i=1; i<=n; i++)kaiinv[i]=kai[i].inv(); vll g(n+1,1); vll g2(n+1,1); mint now=1; mint now2=1; for(int i=0; i<=n; i++){ now=1; for(auto u:p){ int num=u.first; now2=kai[num]*nCk(i,num); now2=pow_pow(now2.val(),u.second,mod); now*=now2; } now*=kaiinv[i]; g[i]=now.val(); } mint base=1; for(int i=0; i<=n; i++){ now=base; now*=kaiinv[i]; g2[i]=now.val(); base*=(mod-1); } auto conv=convolution(g,g2); mint ans=0; for(int i=1; i<=n; i++){ ans+=kai[i]*conv[i]; } cout << ans.val() << endl; } //g++ main.cpp -std=c++17 -I . int main(){cin.tie(0);ios::sync_with_stdio(false); int t=1; //cin >> t; rep(test,t)solve(test); }