Submission #493825

#	Time	Username	Problem	Language	Result	Execution time	Memory
493825		mars4	Examination (JOI19_examination)	C++17	100 / 100	1149 ms	110072 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 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---------------------------------

template<class T> class MergeSortTree
{
	ll N;

	ll lesser_than(ll i,ll val)
	{
		ll res=0;
		for(;i;i-=i&(-i))
		{
			res+=fentree[i].order_of_key(val);
		}
		return res;
	}

	ll greater_than(ll i,ll val)
	{
		ll res=0;
		for(;i;i-=i&(-i))
		{
			res+=(ll)fentree[i].size()-fentree[i].order_of_key(val+1);
		}
		return res;
	}

	public:
	vector<ordered_set<T,less_equal<T>>> fentree;

	void init(ll n)
	{
		N=n;
		fentree=vector<ordered_set<T,less_equal<T>>>(N+1);
	}

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

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

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

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

	ll count(ll l,ll r,ll val)
	{
		ll len=r-l+1;
		ll gt=greater_than(l,r,val);
		ll lt=lesser_than(l,r,val);
		return len-gt-lt;
	}
};

struct st
{
	ll a,b,c,id;
	bool operator < (const st &o) const 
	{
		return a<o.a;
	}
};

int main()
{
	fastio();
	ll z,n,m,t,k,i,j,l,d,h,r;
	cin>>n>>m;
	vector<st> marks(n);
	vector<st> queries(m);
	vector<ll> comp;
	forn(i,0,n)
	{
		auto &[a,b,c,id]=marks[i];
		cin>>a>>b;
		comp.push_back(b);
		c=a+b;
		id=i;
	}
	forn(i,0,m)
	{
		auto &[a,b,c,id]=queries[i];
		cin>>a>>b>>c;
		comp.push_back(b);
		id=i;
	}
	sort(all(comp));
	for(auto &[a,b,c,id]:marks)
	{
		b=lower_bound(all(comp),b)-comp.begin();
	}
	for(auto &[a,b,c,id]:queries)
	{
		b=lower_bound(all(comp),b)-comp.begin();
	}
	sort(all(marks));
	sort(all(queries));
	MergeSortTree<int> mt;
	mt.init(n+m);
	vector<ll> ans(m);
	j=m-1;
	forb(i,n-1,0)
	{
		auto [a,b,c,id]=marks[i];
		while(j>=0 and queries[j].a>a)
		{
			ans[queries[j].id]=mt.greater_than(queries[j].b,n+m-1,queries[j].c-1);
			j--;
		}
		mt.update(b,c);
	}
	while(j>=0)
	{
		ans[queries[j].id]=mt.greater_than(queries[j].b,n+m-1,queries[j].c-1);
		j--;
	}
	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:131:5: warning: unused variable 'z' [-Wunused-variable]
  131 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |     ^
examination.cpp:131:11: warning: unused variable 't' [-Wunused-variable]
  131 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |           ^
examination.cpp:131:13: warning: unused variable 'k' [-Wunused-variable]
  131 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |             ^
examination.cpp:131:15: warning: unused variable 'i' [-Wunused-variable]
  131 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |               ^
examination.cpp:131:19: warning: unused variable 'l' [-Wunused-variable]
  131 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |                   ^
examination.cpp:131:21: warning: unused variable 'd' [-Wunused-variable]
  131 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |                     ^
examination.cpp:131:23: warning: unused variable 'h' [-Wunused-variable]
  131 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |                       ^
examination.cpp:131:25: warning: unused variable 'r' [-Wunused-variable]
  131 |  ll z,n,m,t,k,i,j,l,d,h,r;
      |                         ^

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