結果

問題 No.674 n連勤
ユーザー kiyoshi0205kiyoshi0205
提出日時 2021-01-12 11:41:22
言語 C++17(gcc12)
(gcc 12.3.0 + boost 1.87.0)
結果
AC  
実行時間 21 ms / 2,000 ms
コード長 5,559 bytes
コンパイル時間 11,120 ms
コンパイル使用メモリ 280,412 KB
最終ジャッジ日時 2025-01-17 16:25:20
ジャッジサーバーID
（参考情報） 		judge2 / judge5
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ファイルパターン 結果
sample AC * 3
other AC * 17
権限があれば一括ダウンロードができます

ソースコード

diff # 

#pragma GCC target("avx")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>
// #include<ext/pb_ds/assoc_container.hpp>
// #include<ext/pb_ds/tree_policy.hpp>
// #include<ext/pb_ds/tag_and_trait.hpp>
// using namespace __gnu_pbds;
// #include<boost/multiprecision/cpp_int.hpp>
// namespace multiprecisioninteger = boost::multiprecision;
// using cint=multiprecisioninteger::cpp_int;
using namespace std;
using ll=long long;
#define double long double
using datas=pair<ll,ll>;
using ddatas=pair<double,double>;
using tdata=pair<ll,datas>;
using vec=vector<ll>;
using mat=vector<vec>;
using pvec=vector<datas>;
using pmat=vector<pvec>;
// using llset=tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>;
#define For(i,a,b) for(i=a;i<(ll)b;++i)
#define bFor(i,b,a) for(i=b,--i;i>=(ll)a;--i)
#define rep(i,N) For(i,0,N)
#define rep1(i,N) For(i,1,N)
#define brep(i,N) bFor(i,N,0)
#define brep1(i,N) bFor(i,N,1)
#define all(v) (v).begin(),(v).end()
#define allr(v) (v).rbegin(),(v).rend()
#define vsort(v) sort(all(v))
#define vrsort(v) sort(allr(v))
#define uniq(v) vsort(v);(v).erase(unique(all(v)),(v).end())
#define endl "\n"
#define eb emplace_back
#define print(x) cout<<x<<endl
#define printyes print("Yes")
#define printno print("No")
#define printYES print("YES")
#define printNO print("NO")
#define output(v) do{bool f=0;for(auto outi:v){cout<<(f?" ":"")<<outi;f=1;}cout<<endl;}while(0)
#define matoutput(v) do{for(auto outimat:v)output(outimat);}while(0)
constexpr ll mod=1000000007;
// constexpr ll mod=998244353;
constexpr ll inf=1LL<<60;
constexpr double eps=1e-9;
const double PI=acos(-1);
template<class T,class E> ostream& operator<<(ostream& os,const pair<T,E>& p){return os<<"("<<p.first<<","<<p.second<<")";}
template<class T> ostream& operator<<(ostream& os,const vector<T>& v){
  os<<"{";bool f=false;
  for(auto& x:v){if(f)os<<",";os<<x;f=true;}
  os<<"}";
  return os;
}
template<class T> ostream& operator<<(ostream& os,const set<T>& v){
  os<<"{";bool f=false;
  for(auto& x:v){if(f)os<<",";os<<x;f=true;}
  os<<"}";
  return os;
}
template<class T> inline bool chmax(T& a,T b){bool x=a<b;if(x)a=b;return x;}
template<class T> inline bool chmin(T& a,T b){bool x=a>b;if(x)a=b;return x;}
#ifdef DEBUG
void debugg(){cout<<endl;}
template<class T,class... Args>void debugg(const T& x,const Args&... args){cout<<" "<<x;debugg(args...);}
#define debug(...) cout<<__LINE__<<" ["<<#__VA_ARGS__<<"]:",debugg(__VA_ARGS__)
#else
#define debug(...) (void(0))
#endif

void startupcpp(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout<<fixed<<setprecision(15);
}

// Merge:0->interval set,1->point set
template<typename T,int Merge=1>
struct rangeset:set<pair<T,T>>{
private:
  using P=pair<T,T>;
  using seitr=_Rb_tree_const_iterator<P>;
  const T TINF=numeric_limits<T>::max()/2;
public:
  // There are all [L,R] (not [L,R) )
  rangeset(){
    this->emplace(-TINF,-TINF);
    this->emplace(TINF,TINF);
  }

  // [L,R] covered?
  bool covered(T L,T R){
    assert(L<=R);
    seitr itr(--this->lower_bound(P(L+1,L)));
    return R<=itr->second;
  }
  bool covered(T x){
    return covered(x,x);
  }

  // what is covered [L,R] (not cover->return [-TINF,-TINF])
  P covered_by(T L,T R){
    assert(L<=R);
    seitr itr(--this->lower_bound(P(L+1,L)));
    if(R<=itr->second)return *itr;
    else return *(this->begin());
  }
  P covered_by(T x){
    return covered_by(x,x);
  }
  //insert [L,R] and merge, return (how many add point or interval)
  pair<seitr,T> insert(T L,T R){
    assert(L<=R);
    seitr itr(--this->lower_bound(P(L+1,L)));
    if(R<=itr->second)return pair<seitr,T>(itr,0);

    T deletecnt(0);
    if(itr->second<L-Merge){
      ++itr;
    }else{
      L=itr->first;
      deletecnt=itr->second-itr->first+Merge;
      itr=this->erase(itr);
    }
    while(itr->second<=R){
      deletecnt+=itr->second-itr->first+Merge;
      itr=this->erase(itr);
    }
    if(itr->first<=R+Merge){
      R=itr->second;
      deletecnt+=itr->second-itr->first+Merge;
      itr=this->erase(itr);
    }
    itr=this->emplace_hint(itr,L,R);
    return pair<seitr,T>(itr,R-L+Merge-deletecnt);
  }
  pair<seitr,T> insert(T x){
    // assert(Merge==1);
    return insert(x,x);
  }
  //delete intersect [L,R], return (how many erase point or interval)
  T remove(T L,T R){
    assert(L<=R);
    seitr itr(--this->lower_bound(P(L+1,L)));
    if(R<=itr->second){
      if(itr->first!=L)this->emplace_hint(itr,itr->first,L-Merge);
      if(itr->second!=R)this->emplace_hint(next(itr),R+Merge,itr->second);
      this->erase(itr);
      return R-L+Merge;
    }
    T deletecnt(0);
    if(itr->second<=L-Merge){
      ++itr;
    }else{
      deletecnt=itr->second-L+Merge;
      this->emplace_hint(itr,itr->first,L-Merge);
      itr=this->erase(itr);
    }
    while(itr->second<=R){
      deletecnt+=itr->second-itr->first+Merge;
      itr=this->erase(itr);
    }
    if(itr->first<R+Merge){
      deletecnt+=R-itr->first+Merge;
      this->emplace_hint(next(itr),R+Merge,itr->second);
      this->erase(itr);
    }
    return deletecnt;
  }
  T remove(T x){
    // assert(Merge==1);
    return remove(x,x);
  }
  T mex(T x){
    // assert(Merge==1);
    seitr itr(this->lower_bound(P(x,x)));
    if(itr->first<=x)return itr->second+1;
    else return x+1;
  }
};
ll N,ans;
int main(){
  startupcpp();
  cin>>N>>N;
  rangeset<ll> se;
  for(int i=0;i<N;++i){
    ll L,R;
    cin>>L>>R;
    auto itr=*se.insert(L,R).first;
    chmax(ans,itr.second-itr.first+1);
    debug(se);
    print(ans);
  }
}
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