結果
問題 | No.2135 C5 |
ユーザー | PCTprobability |
提出日時 | 2022-11-25 23:12:36 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 773 ms / 2,000 ms |
コード長 | 9,433 bytes |
コンパイル時間 | 5,306 ms |
コンパイル使用メモリ | 289,732 KB |
実行使用メモリ | 28,120 KB |
最終ジャッジ日時 | 2024-10-02 05:43:20 |
合計ジャッジ時間 | 22,959 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | 8 ms
8,520 KB |
testcase_01 | AC | 8 ms
8,904 KB |
testcase_02 | AC | 8 ms
8,256 KB |
testcase_03 | AC | 748 ms
27,672 KB |
testcase_04 | AC | 8 ms
8,640 KB |
testcase_05 | AC | 8 ms
9,668 KB |
testcase_06 | AC | 7 ms
8,388 KB |
testcase_07 | AC | 8 ms
9,288 KB |
testcase_08 | AC | 8 ms
8,260 KB |
testcase_09 | AC | 9 ms
9,672 KB |
testcase_10 | AC | 8 ms
8,520 KB |
testcase_11 | AC | 8 ms
8,520 KB |
testcase_12 | AC | 8 ms
9,536 KB |
testcase_13 | AC | 7 ms
8,644 KB |
testcase_14 | AC | 7 ms
8,384 KB |
testcase_15 | AC | 373 ms
18,756 KB |
testcase_16 | AC | 748 ms
26,996 KB |
testcase_17 | AC | 746 ms
26,360 KB |
testcase_18 | AC | 740 ms
27,164 KB |
testcase_19 | AC | 16 ms
9,672 KB |
testcase_20 | AC | 367 ms
17,812 KB |
testcase_21 | AC | 27 ms
9,280 KB |
testcase_22 | AC | 91 ms
11,192 KB |
testcase_23 | AC | 764 ms
26,444 KB |
testcase_24 | AC | 382 ms
17,452 KB |
testcase_25 | AC | 760 ms
27,524 KB |
testcase_26 | AC | 186 ms
13,176 KB |
testcase_27 | AC | 181 ms
13,136 KB |
testcase_28 | AC | 758 ms
27,544 KB |
testcase_29 | AC | 751 ms
27,688 KB |
testcase_30 | AC | 744 ms
26,296 KB |
testcase_31 | AC | 757 ms
26,816 KB |
testcase_32 | AC | 751 ms
26,852 KB |
testcase_33 | AC | 758 ms
28,120 KB |
testcase_34 | AC | 756 ms
26,840 KB |
testcase_35 | AC | 8 ms
9,416 KB |
testcase_36 | AC | 8 ms
9,152 KB |
testcase_37 | AC | 8 ms
8,384 KB |
testcase_38 | AC | 8 ms
8,772 KB |
testcase_39 | AC | 94 ms
10,676 KB |
testcase_40 | AC | 50 ms
9,644 KB |
testcase_41 | AC | 768 ms
27,016 KB |
testcase_42 | AC | 189 ms
14,268 KB |
testcase_43 | AC | 17 ms
9,160 KB |
testcase_44 | AC | 9 ms
9,160 KB |
testcase_45 | AC | 376 ms
18,076 KB |
testcase_46 | AC | 18 ms
9,412 KB |
testcase_47 | AC | 186 ms
13,276 KB |
testcase_48 | AC | 764 ms
26,876 KB |
testcase_49 | AC | 770 ms
27,268 KB |
testcase_50 | AC | 773 ms
27,804 KB |
testcase_51 | AC | 765 ms
26,532 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 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 //const ll mod = 1000000009; const ll mod = 998244353; //const ll mod = 1000000007; const ll inf = 4100000000000000000ll; const ld eps = ld(0.00000000001); static 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>auto min(const T& a){ return *min_element(all(a)); } template<class T>auto max(const T& a){ return *max_element(all(a)); } 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;} P hyou(P a){ll x=fastgcd(abs(a.fi),abs(a.se));a.fi/=x;a.se/=x;if(a.se<0){a.fi*=-1;a.se*=-1;}return a;} P Pplus(P a,P b){ return hyou({a.fi*b.se+b.fi*a.se,a.se*b.se});} P Ptimes(P a,ll b){ return hyou({a.fi*b,a.se});} P Ptimes(P a,P b){ return hyou({a.fi*b.fi,a.se*b.se});} P Pminus(P a,P b){ return hyou({a.fi*b.se-b.fi*a.se,a.se*b.se});} P Pgyaku(P a){ return hyou({a.se,a.fi});} template<class T> struct Sum{ vector<T> data; Sum(const vector<T>& v):data(v.size()+1){ for(ll i=0;i<v.size();i++) data[i+1]=data[i]+v[i]; } T get(ll l,ll r) const { return data[r]-data[l]; } }; template<class T> struct Sum2{ vector<vector<T>> data; Sum2(const vector<vector<T>> &v):data(v.size()+1,vector<T>(v[0].size()+1)){ for(int i=0;i<v.size();i++) for(int j=0;j<v[i].size();j++) data[i+1][j+1]=data[i][j+1]+v[i][j]; for(int i=0;i<v.size();i++) for(int j=0;j<v[i].size();j++) data[i+1][j+1]+=data[i+1][j]; } T get(ll x1,ll y1,ll x2,ll y2) const { return data[x2][y2]+data[x1][y1]-data[x1][y2]-data[x2][y1]; } }; void cincout(){ ios::sync_with_stdio(false); std::cin.tie(nullptr); cout<< fixed << setprecision(15); } using mint = modint998244353; ll Memo[1000000],seen[1000000]; ll sum(ll x,vector<ll> base){ seen[x]=1; ll res=0; ll now=1; for(int i=0;i<base.size()-1;i++){ now*=base[i]; res+=x/now; } return res%int(base.size()); } void _ntt(vector<mint> &a,ll sign){ if(sign==1){ atcoder::internal::butterfly(a); }else { atcoder::internal::butterfly_inv(a); } } vector<vector<mint>> _twofft(vector<vector<mint>> a,vector<vector<mint>> b){ int n=a.size(); int m=a[0].size(); int p=1; while(p<m*2) p*=2; m=p; for(int i=0;i<n;i++){ a[i].resize(m); b[i].resize(m); _ntt(a[i],1); _ntt(b[i],1); } vector<vector<mint>> c(n,vector<mint>(m)); for(int i=0;i<n;i++){ for(int j=0;i+j<n;j++){ for(int k=0;k<m;k++){ c[(i+j)][k]+=a[i][k]*b[j][k]; } } } for(int i=0;i<n;i++){ for(int j=n-i;j<n;j++){ for(int k=0;k<m;k++){ c[(i+j-n)][k]+=a[i][k]*b[j][k]; } } } mint u=mint(1)/mint(p); for(int i=0;i<n;i++){ _ntt(c[i],-1); for(int j=0;j<m;j++) c[i][j]*=u; } return c; } vector<mint> twofft(vector<mint> a,vector<mint> b,vector<ll> base,ll X=-1){ ll n=a.size(); if(X!=-1) n=X; ll k=base.size(); vector<vector<mint>> c(k,vector<mint>(n)); vector<vector<mint>> d(k,vector<mint>(n)); for(int i=0;i<n;i++){ c[sum(i,base)%(k)][i]+=a[i]; d[sum(i,base)%(k)][i]+=b[i]; } c=_twofft(c,d); vector<mint> res(n); for(int i=0;i<n;i++){ ll p=sum(i,base)%(k); while(p<int(c.size())){ res[i]+=c[p][i]; p+=k; } } return res; } vector<mint> multiinv(vector<mint> f,vector<ll> base,ll X=-1){ ll n=f.size(); ll k=base.size(); if(X==-1){ X=1000000; } vector<mint> g={mint(1)/mint(f[0])}; vector<mint> f2,g2; for(int d=1;d<min(n,X);d*=2){ f2.resize(2*d); g2.resize(2*d); for(int i=0;i<d;i++){ g2[i]=-g[i]; } for(int i=0;i<min(int(f.size()),2*d);i++){ f2[i]=f[i]; } f2=twofft(f2,g2,base,2*d); f2[0]+=2; f2=twofft(f2,g2,base,2*d); for(int i=0;i<2*d;i++) f2[i]*=-1; g=f2; } g.resize(min(n,X)); return g; } vector<vector<mint>> station(vector<mint> f,vector<ll> base){ ll n=f.size(); ll k=base.size(); vector<vector<mint>> f2(k,vector<mint>(n)); for(int i=0;i<n;i++) f2[sum(i,base)%k][i]+=f[i]; return f2; } vector<mint> diff(vector<mint> f){ for(int i=0;i<int(f.size());i++) f[i]*=i; return f; } vector<mint> Inv; vector<mint> integ(vector<mint> f){ ll n=f.size(); if(n>Inv.size()){ ll x=Inv.size(); Inv.resize(n); ll Mod=mint::mod(); if(x<2) Inv[1]=1; for(int i=max(2ll,x);i<n;i++){ Inv[i]=-Inv[Mod%i]*(Mod/i); } } for(int i=0;i<int(f.size());i++){ f[i]*=Inv[i]; } return f; } vector<mint> multilog(vector<mint> f,vector<ll> base,ll X=-1){ ll n=f.size(); ll k=base.size(); auto g=f; f=diff(f); if(X==-1){ g=multiinv(g,base); } else{ g=multiinv(g,base,X); } if(X==-1){ vector<mint> res=twofft(f,g,base); res=integ(res); return res; } else{ vector<mint> res=twofft(f,g,base,X); res=integ(res); return res; } } vector<mint> multiexp(vector<mint> f,vector<ll> base){ ll n=f.size(); ll k=base.size(); if(base.size()==0){ return {mint(1)}; } else{ vector<mint> g={mint(1)}; for(int d=1;d<n;d*=2){ vector<mint> f2(2*d); vector<mint> g2(2*d); for(int i=0;i<min(int(f.size()),2*d);i++) f2[i]=f[i]; f2[0]++; for(int i=0;i<d;i++) g2[i]=g[i]; g2=multilog(g2,base,2*d); for(int i=0;i<2*d;i++) f2[i]-=g2[i]; vector<mint> g3(2*d); for(int i=0;i<d;i++) g3[i]=g[i]; f2=twofft(f2,g3,base,2*d); g=f2; } g.resize(n); return g; } } //次数がずっと同じなら一番上の sum(i,j) のメモ化をした方が早い constexpr ll MAX = 200010; 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() { COMinit(); cincout(); ll n,m; cin>>n>>m; vector<mint> dp((n+1)*(n+1)); dp[1]=1; for(int i=2;i<=n;i++){ dp[i+(i-1)*(n+1)]=mint(fac[i])/mint(2)*finv[i]; } for(int i=5;i<=n;i++){ dp[i+i*(n+1)]=mint(fac[i-1])/mint(2)*finv[i]; } dp=multiexp(dp,{n+1,n+1}); if(n*(n-1)/2-m>n){ cout<<0<<endl; return 0; } cout<<(dp[n+(n*(n-1)/2-m)*(n+1)]*fac[n]).val()<<endl; }