結果
問題 | No.1821 LEQ-GEQ Permutations |
ユーザー | PCTprobability |
提出日時 | 2022-01-21 22:25:20 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 497 ms / 2,500 ms |
コード長 | 4,759 bytes |
コンパイル時間 | 4,596 ms |
コンパイル使用メモリ | 267,948 KB |
実行使用メモリ | 175,488 KB |
最終ジャッジ日時 | 2024-11-26 01:02:20 |
合計ジャッジ時間 | 15,142 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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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 | 354 ms
175,360 KB |
testcase_01 | AC | 340 ms
175,300 KB |
testcase_02 | AC | 341 ms
175,360 KB |
testcase_03 | AC | 334 ms
175,428 KB |
testcase_04 | AC | 340 ms
175,384 KB |
testcase_05 | AC | 349 ms
175,300 KB |
testcase_06 | AC | 344 ms
175,232 KB |
testcase_07 | AC | 349 ms
175,432 KB |
testcase_08 | AC | 352 ms
175,360 KB |
testcase_09 | AC | 448 ms
175,360 KB |
testcase_10 | AC | 347 ms
175,360 KB |
testcase_11 | AC | 342 ms
175,360 KB |
testcase_12 | AC | 360 ms
175,300 KB |
testcase_13 | AC | 360 ms
175,232 KB |
testcase_14 | AC | 380 ms
175,232 KB |
testcase_15 | AC | 434 ms
175,300 KB |
testcase_16 | AC | 450 ms
175,232 KB |
testcase_17 | AC | 386 ms
175,360 KB |
testcase_18 | AC | 485 ms
175,232 KB |
testcase_19 | AC | 497 ms
175,304 KB |
testcase_20 | AC | 484 ms
175,360 KB |
testcase_21 | AC | 491 ms
175,360 KB |
testcase_22 | AC | 492 ms
175,360 KB |
testcase_23 | AC | 351 ms
175,360 KB |
testcase_24 | AC | 358 ms
175,488 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #if __has_include(<atcoder/all>) #include <atcoder/all> using namespace atcoder; #endif using ll = long long; using ld = long double; using ull = unsigned long long; #define endl "\n" typedef pair<int,int> Pii; #define REP(i, n) for (int i = 0; i < (n); ++i) #define REP3(i, m, n) for (int i = (m); (i) < int(n); ++ (i)) #define FOR(i,a,b) for(ll i=a;i<=(ll)(b);i++) #define rep(i,a,b) for(int i=(int)(a);i<(int)(b);i++) #define ALL(x) begin(x), end(x) #define PB push_back #define rrep(i,a,b) for(int i=a;i>=b;i--) #define fore(i,a) for(auto &i:a) #define all(s) (s).begin(),(s).end() #define drep2(i, m, n) for (int i = (m)-1; i >= (n); --i) #define drep(i, n) drep2(i, n, 0) #define rever(vec) reverse(vec.begin(), vec.end()) #define sor(vec) sort(vec.begin(), vec.end()) #define fi first #define se second #define pb push_back #define P pair<ll,ll> #define PQminll priority_queue<ll, vector<ll>, greater<ll>> #define PQmaxll priority_queue<ll,vector<ll>,less<ll>> #define PQminP priority_queue<P, vector<P>, greater<P>> #define PQmaxP priority_queue<P,vector<P>,less<P>> #define NP next_permutation //typedef string::const_iterator State; //class ParseError {}; //const ll mod = 1000000009; const ll mod = 998244353; //const ll mod = 1000000007; const ll inf = 4100000000000000000ll; const ld eps = ld(0.000000000001); const long double pi = 3.141592653589793; template<class T>void vcin(vector<T> &n){for(int i=0;i<int(n.size());i++) cin>>n[i];} template<class T,class K>void vcin(vector<T> &n,vector<K> &m){for(int i=0;i<int(n.size());i++) cin>>n[i]>>m[i];} template<class T>void vcout(vector<T> &n){for(int i=0;i<int(n.size());i++){cout<<n[i]<<" ";}cout<<endl;} template<class T>void vcin(vector<vector<T>> &n){for(int i=0;i<int(n.size());i++){for(int j=0;j<int(n[i].size());j++){cin>>n[i][j];}}} template<class T>void vcout(vector<vector<T>> &n){for(int i=0;i<int(n.size());i++){for(int j=0;j<int(n[i].size());j++){cout<<n[i][j]<<" ";}cout<<endl;}cout<<endl;} void yes(bool a){cout<<(a?"yes":"no")<<endl;} void YES(bool a){cout<<(a?"YES":"NO")<<endl;} void Yes(bool a){cout<<(a?"Yes":"No")<<endl;} void possible(bool a){ cout<<(a?"possible":"impossible")<<endl; } void Possible(bool a){ cout<<(a?"Possible":"Impossible")<<endl; } void POSSIBLE(bool a){ cout<<(a?"POSSIBLE":"IMPOSSIBLE")<<endl; } template<class T>void print(T a){cout<<a<<endl;} template<class T,class F>void print(pair<T,F> a){cout<<a.fi<<" "<<a.se<<endl;} template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0;} template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0;} template<class T> void ifmin(T t,T u){if(t>u){cout<<-1<<endl;}else{cout<<t<<endl;}} template<class T> void ifmax(T t,T u){if(t>u){cout<<-1<<endl;}else{cout<<t<<endl;}} ll fastgcd(ll u,ll v){ll shl=0;while(u&&v&&u!=v){bool eu=!(u&1);bool ev=!(v&1);if(eu&&ev){++shl;u>>=1;v>>=1;}else if(eu&&!ev){u>>=1;}else if(!eu&&ev){v>>=1;}else if(u>=v){u=(u-v)>>1;}else{ll tmp=u;u=(v-u)>>1;v=tmp;}}return !u?v<<shl:u<<shl;} ll modPow(ll a, ll n, ll mod) { if(mod==1) return 0;ll ret = 1; ll p = a % mod; while (n) { if (n & 1) ret = ret * p % mod; p = p * p % mod; n >>= 1; } return ret; } vector<ll> divisor(ll x){ vector<ll> ans; for(ll i = 1; i * i <= x; i++){ if(x % i == 0) {ans.push_back(i); if(i*i!=x){ ans.push_back(x / ans[i]);}}}sor(ans); return ans; } ll pop(ll x){return __builtin_popcountll(x);} ll poplong(ll x){ll y=-1;while(x){x/=2;y++;}return y;} void cincout() { ios::sync_with_stdio(false); std::cin.tie(nullptr); cout<< fixed << setprecision(10); } using mint = modint998244353; mint dp[5100][5100]; constexpr ll MAX = 3000000; ll fac[MAX],finv[MAX],inv[MAX]; void COMinit(){ fac[0]=fac[1]=1; finv[0]=finv[1]=1; inv[1]=1; for(int i=2;i<MAX;i++){ fac[i]=fac[i-1]*i%mod; inv[i]=mod-inv[mod%i]*(mod/i)%mod; finv[i]=finv[i-1]*inv[i]%mod; } } ll binom(ll n,ll k){ if(n<k) return 0; if(n<0||k<0) return 0; return fac[n]*(finv[k]*finv[n-k]%mod)%mod; } ll HOM(ll n,ll k){ if(n==0&&k==0) return 1; return binom(n+k-1,k); } ll POM(ll n,ll k){ if(n<k) return 0; return fac[n]*finv[n-k]%mod; } int main(){ cincout(); COMinit(); dp[0][0]=1; for(int i=0;i<5050;i++){ for(int j=0;j<5050;j++){ dp[i+1][j]+=dp[i][j]*j; if(j) dp[i+1][j]+=dp[i][j-1]*(i+1-j); if(j&&i) dp[i+1][j]+=dp[i-1][j-1]*i; } } ll n; cin>>n; string s; cin>>s; ll x=0,y=0; for(auto e:s){ if(e-'0') x++; else y++; } mint ans=0; for(int i=0;i<=n;i++){ for(int j=0;j+i<=n;j++){ if(i>x) continue; if(i+(n-i-j)<x) continue; ans+=dp[i+j][j]*binom(n,n-i-j)*binom(n-i-j,x-i); } } cout<<(ans*fac[x]*fac[y]).val()<<endl; }