Submission #503540

#	Time	Username	Problem	Language	Result	Execution time	Memory
503540		mars4	Examination (JOI19_examination)	C++17	2 / 100	3009 ms	17660 KiB

examination

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp> 

using namespace std;
using namespace __gnu_pbds; 

#define ff              first
#define ss              second
#define ll              int64_t
#define ld              long double
#define nl              cout<<"\n"
#define all(v)          v.begin(),v.end()
#define mset(a,v)       memset((a),(v),sizeof(a))
#define forn(i,a,b)     for(int64_t i=int64_t(a);i<int64_t(b);++i)
#define forb(i,a,b)     for(int64_t i=int64_t(a);i>=int64_t(b);--i)
#define fastio()        ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);

#define mod         1'000'000'007
#define mod2        998'244'353 
#define inf         1'000'000'000'000'007
#define pi          3.14159265358979323846

template<class key,class cmp=std::less<key>>
using ordered_set=tree<key,null_type,cmp,rb_tree_tag,tree_order_statistics_node_update>;

template<class L,class R> ostream& operator<<(ostream& out,pair<L,R> &p)        {return out<<"("<<p.ff<<", "<<p.ss<<")";}
template<class T> ostream& operator<<(ostream& out,vector<T> &v)                {out<<"[";for(auto it=v.begin();it!=v.end();++it){if(it!=v.begin())out<<", ";out<<*it;}return out<<"]";}
template<class T> ostream& operator<<(ostream& out,deque<T> &v)                 {out<<"[";for(auto it=v.begin();it!=v.end();++it){if(it!=v.begin())out<<", ";out<<*it;}return out<<"]";}
template<class T> ostream& operator<<(ostream& out,set<T> &s)                   {out<<"{";for(auto it=s.begin();it!=s.end();++it){if(it!=s.begin())out<<", ";out<<*it;}return out<<"}";}
template<class T> ostream& operator<<(ostream& out,ordered_set<T> &s)           {out<<"{";for(auto it=s.begin();it!=s.end();++it){if(it!=s.begin())out<<", ";out<<*it;}return out<<"}";}
template<class L,class R> ostream& operator<<(ostream& out,map<L,R> &m)         {out<<"{";for(auto it=m.begin();it!=m.end();++it){if(it!=m.begin())out<<", ";out<<*it;}return out<<"}";}

void dbg_out() {cerr<<"]\n";}
template<typename Head,typename... Tail> 
void dbg_out(Head H,Tail... T) {cerr<<H;if(sizeof...(Tail))cerr<<", ";dbg_out(T...);}
#ifdef LOCAL
	#define dbg(...) cerr<<"["<<#__VA_ARGS__<<"] = [",dbg_out(__VA_ARGS__)
#else
	#define dbg(...)
#endif

//---------------------------------mars4---------------------------------

class Fentree
{
	ll N;
	ll logN;

	ll sum(ll i)
	{
		ll res=0;
		for(;i;i-=i&(-i))
			res+=fentree[i];
		return res;
	}

	public:
	vector<ll> fentree;

	void init(ll n)
	{
		N=n;
		logN=65-__builtin_clzll(n);
		fentree=vector<ll>(N+1);
	}

	void build(vector<ll> &a)
	{
		for(ll i=1;i<=N;i++)
		{
			fentree[i]+=a[i-1];
			if(i+(i&-i)<=N)
				fentree[i+(i&-i)]+=fentree[i];
		}
	}

	void update(ll i,ll val)
	{
		for(i++;i<=N;i+=i&(-i))
			fentree[i]+=val;
	}

	ll sum(ll l,ll r)
	{
		return sum(r+1)-sum(l);
	}

	ll kth_element(ll k)
	{
		ll val=0;
		ll pos=0;
		for(ll i=logN;i>=0;i--)
		{
			ll r=1ll<<i;
			if(pos+r<=N and val+fentree[pos+r]<k)
			{
				val+=fentree[pos+r];
				pos+=r;
			}
		}
		return pos;
	}
};

const ll B=320;

struct query 
{
	ll l,r,c,id;
	bool operator < (const query &o) const 
	{
		if(l/B==o.l/B) 
		{
			if((l/B)%2==0) 
				return r<o.r;
			else 
				return r>o.r;
		} 
		else 
			return l<o.l;
	}
};

vector<pair<ll,ll>> a;
vector<pair<ll,ll>> b;
vector<ll> c;
vector<ll> cnt;
Fentree f;
ll N,M;

class Mo
{
	ll L=-1;
	ll R=-1;

	void updatel(ll i)
	{
		auto [val,id]=a[i];
		cnt[id]++;
		if(cnt[id]==2)
		{
			f.update(c[id],1);
		}
	}

	void removel(ll i)
	{
		auto [val,id]=a[i];
		if(cnt[id]==2)
		{
			f.update(c[id],-1);
		}
		cnt[id]--;
	}

	void updater(ll i)
	{
		auto [val,id]=b[i];
		cnt[id]++;
		if(cnt[id]==2)
		{
			f.update(c[id],1);
		}
	}

	void remover(ll i)
	{
		auto [val,id]=b[i];
		if(cnt[id]==2)
		{
			f.update(c[id],-1);
		}
		cnt[id]--;
	}

	public:
	ll query(query q)
	{
		ll l=q.l;
		ll r=q.r;
		ll c=q.c;
		while(L>=0 and a[L].ff>=l)
		{
			updatel(L);
			L--;
		}
		while(L+1<N and a[L+1].ff<l)
		{
			L++;
			removel(L);
		}
		while(R>=0 and b[R].ff>=r)
		{
			updater(R);
			R--;
		}
		while(R+1<N and b[R+1].ff<r)
		{
			R++;
			remover(R);
		}
		return f.sum(c,N+M-1);
	}
};

int main()
{
	fastio();
	ll z,n,m,t,k,i,j,l,d,h,r;
	cin>>n>>m;
	N=n,M=m;
	a=vector<pair<ll,ll>>(n);
	b=vector<pair<ll,ll>>(n);
	c=vector<ll>(n);
	cnt=vector<ll>(n,2);
	vector<ll> a2;
	vector<ll> b2;
	vector<ll> c2;
	forn(i,0,n)
	{
		cin>>a[i].ff>>b[i].ff;
		a[i].ss=i;
		b[i].ss=i;
		c[i]=a[i].ff+b[i].ff;
		a2.push_back(a[i].ff);
		b2.push_back(b[i].ff);
		c2.push_back(c[i]);
	}
	vector<query> q(m);
	forn(i,0,m)
	{
		cin>>q[i].l>>q[i].r>>q[i].c;
		q[i].id=i;
		a2.push_back(q[i].l);
		b2.push_back(q[i].r);
		c2.push_back(q[i].c);
	}
	sort(all(a2));
	sort(all(b2));
	sort(all(c2));
	for(auto &[l,r]:a)
	{
		l=lower_bound(all(a2),l)-a2.begin();
	}
	for(auto &[l,r]:b)
	{
		l=lower_bound(all(b2),l)-b2.begin();
	}
	for(auto &l:c)
	{
		l=lower_bound(all(c2),l)-c2.begin();
	}
	for(auto &[l,r,c,id]:q)
	{
		l=lower_bound(all(a2),l)-a2.begin();
		r=lower_bound(all(b2),r)-b2.begin();
		c=lower_bound(all(c2),c)-c2.begin();
	}
	f.init(n+m);
	for(ll i:c)
	{
		f.update(i,1);
	}
	sort(all(a));
	sort(all(b));
	Mo mo;
	vector<ll> ans(m);
	for(auto qu:q)
	{
		ans[qu.id]=mo.query(qu);
	}
	for(ll i:ans)
	{
		cout<<i<<"\n";
	}
	cerr<<"\nTime elapsed: "<<1000*clock()/CLOCKS_PER_SEC<<"ms\n";
	return 0;
}

Compilation message (stderr)

examination.cpp: In function 'int main()':
examination.cpp:210:5: warning: unused variable 'z' [-Wunused-variable]
  210 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |     ^
examination.cpp:210:11: warning: unused variable 't' [-Wunused-variable]
  210 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |           ^
examination.cpp:210:13: warning: unused variable 'k' [-Wunused-variable]
  210 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |             ^
examination.cpp:210:15: warning: unused variable 'i' [-Wunused-variable]
  210 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |               ^
examination.cpp:210:17: warning: unused variable 'j' [-Wunused-variable]
  210 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |                 ^
examination.cpp:210:19: warning: unused variable 'l' [-Wunused-variable]
  210 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |                   ^
examination.cpp:210:21: warning: unused variable 'd' [-Wunused-variable]
  210 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |                     ^
examination.cpp:210:23: warning: unused variable 'h' [-Wunused-variable]
  210 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |                       ^
examination.cpp:210:25: warning: unused variable 'r' [-Wunused-variable]
  210 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |                         ^

• Subtask 1: 2 / 2
• Subtask 2: 0 / 20
• Subtask 3: 0 / 21
• Subtask 4: 0 / 57