結果
問題 | No.2327 Inversion Sum |
ユーザー | cureskol |
提出日時 | 2023-05-28 14:05:19 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 34 ms / 2,000 ms |
コード長 | 9,267 bytes |
コンパイル時間 | 4,230 ms |
コンパイル使用メモリ | 271,800 KB |
実行使用メモリ | 6,528 KB |
最終ジャッジ日時 | 2024-06-08 04:40:01 |
合計ジャッジ時間 | 5,655 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
(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 | 10 ms
6,016 KB |
testcase_01 | AC | 30 ms
5,884 KB |
testcase_02 | AC | 24 ms
6,528 KB |
testcase_03 | AC | 8 ms
5,632 KB |
testcase_04 | AC | 34 ms
5,716 KB |
testcase_05 | AC | 7 ms
5,376 KB |
testcase_06 | AC | 24 ms
5,616 KB |
testcase_07 | AC | 13 ms
5,376 KB |
testcase_08 | AC | 5 ms
5,376 KB |
testcase_09 | AC | 31 ms
5,760 KB |
testcase_10 | AC | 9 ms
5,376 KB |
testcase_11 | AC | 4 ms
5,376 KB |
testcase_12 | AC | 3 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 20 ms
5,376 KB |
testcase_15 | AC | 34 ms
5,376 KB |
testcase_16 | AC | 15 ms
5,888 KB |
testcase_17 | AC | 5 ms
5,376 KB |
testcase_18 | AC | 5 ms
5,376 KB |
testcase_19 | AC | 12 ms
5,760 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 2 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 2 ms
5,376 KB |
testcase_29 | AC | 2 ms
5,376 KB |
testcase_30 | AC | 2 ms
5,376 KB |
testcase_31 | AC | 2 ms
5,376 KB |
testcase_32 | AC | 2 ms
5,376 KB |
ソースコード
#pragma region template #pragma GCC optimize("Ofast") #include <bits/stdc++.h> using namespace std; using ll=long long; using ld=long double; using vi=vector<int>; using vll=vector<ll>; using pi=pair<int,int>; using pll=pair<ll,ll>; #define overload2(a,b,c,...) c #define overload3(a,b,c,d,...) d #define overload4(a,b,c,d,e,...) e #define overload5(a,b,c,d,e,f,...) f #define TYPE1(T) template<typename T> #define TYPE2(T,U) template<typename T,typename U> #define TYPE(...) overload2(__VA_ARGS__,TYPE2,TYPE1)(__VA_ARGS__) #define TYPES1(T) template<typename... T> #define TYPES2(H,T) template<typename H,typename... T> #define TYPES(...) overload2(__VA_ARGS__,TYPES2,TYPES1)(__VA_ARGS__) #define REP4(i,s,n,d) for(int i=(s);i<(n);i+=(d)) #define REP3(i,s,n) REP4(i,s,n,1) #define REP2(i,n) REP3(i,0,n) #define REP1(n) REP2(tomato,n) #define REP(...) overload4(__VA_ARGS__,REP4,REP3,REP2,REP1)(__VA_ARGS__) #define RREP4(i,n,s,d) for(int i=(n)-1;i>=(s);i-=(d)) #define RREP3(i,n,s) RREP4(i,n,s,1) #define RREP2(i,n) RREP3(i,n,0) #define RREP1(n) RREP2(tomato,n) #define RREP(...) overload4(__VA_ARGS__,RREP4,RREP3,RREP2,RREP1)(__VA_ARGS__) #define FOR4(a,b,c,d,v) for(auto [a,b,c,d]:v) #define FOR3(a,b,c,v) for(auto [a,b,c]:v) #define FOR2(a,b,v) for(auto [a,b]:v) #define FOR1(a,v) for(auto a:v) #define FOR(...) overload5(__VA_ARGS__,FOR4,FOR3,FOR2,FOR1)(__VA_ARGS__) #define AFOR4(a,b,c,d,v) for(auto&[a,b,c,d]:v) #define AFOR3(a,b,c,v) for(auto&[a,b,c]:v) #define AFOR2(a,b,v) for(auto&[a,b]:v) #define AFOR1(a,v) for(auto&a:v) #define AFOR(...) overload5(__VA_ARGS__,AFOR4,AFOR3,AFOR2,AFOR1)(__VA_ARGS__) #define CFOR4(a,b,c,d,v) for(const auto&[a,b,c,d]:v) #define CFOR3(a,b,c,v) for(const auto&[a,b,c]:v) #define CFOR2(a,b,v) for(const auto&[a,b]:v) #define CFOR1(a,v) for(const auto&a:v) #define CFOR(...) overload5(__VA_ARGS__,CFOR4,CFOR3,CFOR2,CFOR1)(__VA_ARGS__) #define PFOR(v) for(bool f=true; (f ? exchange(f,false) : next_permutation(ALL(v)));) #define ALL(v) v.begin(),v.end() #define RALL(v) v.rbegin(),v.rend() #define SORT(v) sort(ALL(v)) #define RSORT(v) sort(RALL(v)) #define REVERSE(v) reverse(ALL(v)) #define UNIQUE(v) SORT(v),v.erase(unique(ALL(v)),v.end()) #define SZ(v) int(v.size()) TYPES(T) void input(T&... a){ (cin>>...>>a); } #define DECLARE(T,...) T __VA_ARGS__;input(__VA_ARGS__); #define INT(...) DECLARE(int,__VA_ARGS__) #define STR(...) DECLARE(string,__VA_ARGS__) #define LL(...) DECLARE(long long,__VA_ARGS__) #define CHR(...) DECLARE(char,__VA_ARGS__) #define DBL(...) DECLARE(double,__VA_ARGS__) #define VI(n,v) vi v(n);cin>>v; #define VLL(n,v) vll v(n);cin>>v; #define VS(n,s) vector<string> s(n);cin>>s; TYPE(T) istream&operator>>(istream&is,vector<T>&v){ for(auto&a:v)cin>>a; return is; } TYPE(T) ostream&operator<<(ostream&os,const vector<T>&v){ if(&os==&cerr)os<<"["; REP(i,v.size()){ os<<v[i]; if(i+1<v.size())os<<(&os==&cerr?",":" "); } if(&os==&cerr)os<<"]"; return os; } TYPE(T,S) istream&operator>>(istream&is,pair<T,S>&p){ cin>>p.first>>p.second; return is; } #ifdef __DEBUG #include <debug> #else #define debug(...) void(0) #endif void print(){ cout << '\n'; } TYPES(T,Ts) void print(const T& a,const Ts&... b){ cout<<a; (cout<<...<<(cout<< ' ',b)); cout << '\n'; } TYPE(T) using pq=priority_queue<T>; TYPE(T) using pqg=priority_queue<T,vector<T>,greater<T>>; TYPE(T) T pick(queue<T>& que){assert(que.size()); T a=que.front();que.pop();return a;} TYPE(T) T pick(pq<T>& que){assert(que.size()); T a=que.top();que.pop();return a;} TYPE(T) T pick(pqg<T>& que){assert(que.size()); T a=que.top();que.pop();return a;} TYPE(T) T pick(stack<T>& sta){assert(sta.size()); T a=sta.top();sta.pop();return a;} TYPE(T) void clear(T&v){ v=decltype(v)(); } string YES(bool f=true){return (f?"YES":"NO");} string Yes(bool f=true){return (f?"Yes":"No");} string yes(bool f=true){return (f?"yes":"no");} constexpr int INF=1e9+7; constexpr ll LINF=ll(1e18)+7; constexpr ld EPS=1e-10; vi iota(int n){vi a(n);iota(ALL(a),0);return a;} TYPE(T) vector<pair<T,int>> query_sort(const vector<T>&v){ vector<pair<T,int>> res(v.size()); REP(i,v.size())res[i]={v[i],i}; SORT(res); return res; } TYPE(T) void add(vector<T>&v,T a=1){ AFOR(p,v)p+=a; } TYPE(T) T rev(T a){ REVERSE(a);return a; } TYPE(T) void fin(T a){cout<<a<<'\n';exit(0);} TYPE(T) bool chmax(T &a,T b){return (a<b&&(a=b,true));} TYPE(T) bool chmin(T &a,T b){return (a>b&&(a=b,true));} TYPES(T,Ns) auto make_vector(T x,int n,Ns ...ns){ if constexpr(sizeof...(ns)==0)return vector<T>(n,x); else return vector(n,make_vector<T>(x,ns...)); } bool in(const ll S,const int a){return (S>>a)&1;} int popcount(const ll S){return __builtin_popcountll(S);} int digit(char c){ return (c>='0' and c<='9' ? c-'0' : -1);} ll sqrtll(ll a){ for(ll b=sqrt(a);b*b<=a;b++)if(b*b==a)return b; for(ll b=sqrt(a);b>=0 and b*b>=a;b--)if(b*b==a)return b; return -1; } #pragma endregion template #include <atcoder/modint> #include <atcoder/convolution> using namespace atcoder; using mint=modint998244353; namespace atcoder{ ostream& operator<<(ostream &os,mint a){os<<a.val();return os;} istream& operator>>(istream &is,mint &a){ long long b;is>>b;a=b; return is; } } #include <atcoder/fenwicktree> using namespace atcoder; #define ALL_(v) v.begin(),v.end() template<typename T,bool Sentinel=false> class Compress{ vector<T> v; bool prepared; public: Compress():prepared(false){ if constexpr(Sentinel){ static_assert(std::numeric_limits<T>::is_specialized,"cannot use Sentinel"); v={numeric_limits<T>::min(),numeric_limits<T>::max()}; } } Compress(const vector<T>&w):v(w),prepared(false){ if constexpr(Sentinel){ static_assert(std::numeric_limits<T>::is_specialized,"cannot use Sentinel"); v.push_back(numeric_limits<T>::min()); v.push_back(numeric_limits<T>::max()); } build(); } void add(T a){ assert(!prepared); v.push_back(a); } void build(){ assert(!prepared); prepared=true; sort(ALL_(v)); v.erase(unique(ALL_(v)),v.end()); } bool is_prepared()const{ return prepared; } int operator[](const T&a)const{ assert(prepared); auto it=lower_bound(ALL_(v),a); assert(*it==a); return distance(v.begin(),it); } int geq(const T&a)const{ assert(prepared); auto it=lower_bound(ALL_(v),a); return distance(v.begin(),it); } int gt(const T&a)const{ assert(prepared); auto it=upper_bound(ALL_(v),a); return distance(v.begin(),it); } int leq(const T&a)const{ assert(prepared); auto it=--upper_bound(ALL_(v),a); return distance(v.begin(),it); } int lt(const T&a)const{ assert(prepared); auto it=--lower_bound(ALL_(v),a); return distance(v.begin(),it); } T r(int id)const{ assert(prepared); return v[id]; } bool exist(const T&a)const{ assert(prepared); return (*lower_bound(ALL_(v),a))==a; } int size()const{return v.size();} T max()const{ return v.back(); } T min()const{ return v[0]; } friend ostream&operator<<(ostream&os, const Compress&C){ for(int i=0;i<C.v.size();i++)os<<C.v[i]<<":"<<i<<" "; return os; } }; #undef ALL_ template <typename T> long long inversion_number(const vector<T> &v){ Compress cmp(v); fenwick_tree<int> ft(cmp.size()); long long res=0; for(int i=int(v.size())-1;i>=0;i--){ int j=cmp[v[i]]; res+=ft.sum(0,j); ft.add(j,1); } return res; } template<typename MINT> class MintUtility{ vector<MINT> fact_={MINT::raw(1)}; vector<MINT> inv_fact_{MINT::raw(1)}; int S=1;//今のサイズ void extend(const int n){ if(n<S)return; const int preS=S; do{S<<=1;}while(S<=n); fact_.resize(S); for(int i=preS;i<S;i++)fact_[i]=fact_[i-1]*MINT::raw(i); inv_fact_.resize(S); inv_fact_.back()=fact_.back().inv(); for(int i=S-1;i>preS;i--)inv_fact_[i-1]=inv_fact_[i]*MINT::raw(i); } public: MINT fact(const int n){ assert(n>=0); extend(n); return fact_[n]; } MINT inv_fact(const int n){ assert(n>=0); extend(n); return inv_fact_[n]; } MINT nCk(const int n,const int k){ if(k<0||n<k)return MINT::raw(0); extend(n); return fact_[n] * inv_fact_[k] * inv_fact_[n - k]; } MINT nPk(const int n,const int k){ if(k<0||n<k)return MINT::raw(0); extend(n); return fact_[n] * inv_fact_[n-k]; } MINT nHk(const int n,const int k){ return (n==0 and k==0?1:nCk(n+k-1,k)); } }; MintUtility<mint> M; #include <atcoder/fenwicktree> using namespace atcoder; int main(){ ios::sync_with_stdio(false); cin.tie(nullptr); INT(n,m); vector<pi> w(m); AFOR(p,k,w){ cin>>p>>k; p--;k--; } SORT(w); vector<int> v(m); REP(i,m)v[i]=w[i].second; mint ans=0; ans += inversion_number(v) * M.fact(n-m); ans += M.fact(n-m) * M.nCk(n-m,2)/2; fenwick_tree<ll> ft(n); fenwick_tree<ll> ft2(n); REP(i,n){ ft.add(i,1); ft2.add(i,1); } CFOR(p,k,w){ ft.add(k,-1); ft2.add(p,-1); } if(n!=m){ CFOR(p,k,w){ mint mi=ft.sum(0,k); mint ri=ft2.sum(p+1,n); ans += mi*ri*M.fact(n-m-1); mint ma=ft.sum(k+1,n); mint le=ft2.sum(0,p); ans += ma*le*M.fact(n-m-1); } } cout<<ans<<'\n'; }