oj.uz

Submission #53264

# Submission time Handle Problem Language Result Execution time Memory
53264 2018-06-29T06:19:53 Z zetapi New Home (APIO18_new_home) C++14
10 / 100
 5000 ms 975652 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define pb  push_back
#define mp  make_pair
#define int long long
#define itr ::iterator 
 
typedef pair<int,int>  pii;
 
const int MAX=1e7;
const int INF=1e8;
 
struct data
{
	int val;
	int left;
	int right;
}  	seg[MAX],seg_[MAX];

multiset<int> st[MAX];
multiset<int> itr it,nxt,pre;

vector<int> vec[MAX];

vector<pii> order;

vector< pair<int,pii> > ask;

int N,K,Q,X,Y,n,t,timer,timers,ptr,type[MAX],loc[MAX],res[MAX];
 
int get(int X,int Y)
{
	return Y-X;
}
 
int gets(int X,int Y)
{
	if(!Y)
		return 0;
	return X-Y;
}
 
void UpdateNeg(int low,int high,int node,int qlow,int delta)
{	
	if(low>high or qlow>high)
		return ;
	if(qlow<=low)
	{
		seg[node].val=max(seg[node].val,delta);
		return ;
	}
	if(!seg[node].left)
		seg[node].left=++timer;
	if(!seg[node].right)
		seg[node].right=++timer;
	int mid=(low+high)/2;
	UpdateNeg(low,mid,seg[node].left,qlow,delta);
	UpdateNeg(mid+1,high,seg[node].right,qlow,delta);
	return ;
}
 
void UpdatePos(int low,int high,int node,int qhigh,int delta)
{
	if(low>high or low>qhigh)
		return ;
	if(high<=qhigh)
	{
		if(!seg_[node].val)
			seg_[node].val=delta;
		else
			seg_[node].val=min(seg_[node].val,delta);
		return ;
	}
	if(!seg_[node].left)
		seg_[node].left=++timers;
	if(!seg_[node].right)
		seg_[node].right=++timers;
	int mid=(low+high)/2;
	UpdatePos(low,mid,seg_[node].left,qhigh,delta);
	UpdatePos(mid+1,high,seg_[node].right,qhigh,delta);
	return ;
}
 
int QueryNeg(int low,int high,int node,int idx)
{
	if(!node)
		return 0;
	if(low==high)
		return get(idx,seg[node].val);
	int mid=(low+high)/2;
	if(idx>=low and idx<=mid)
		return max(get(idx,seg[node].val),QueryNeg(low,mid,seg[node].left,idx));
	else
		return max(get(idx,seg[node].val),QueryNeg(mid+1,high,seg[node].right,idx));
}
 
int QueryPos(int low,int high,int node,int idx)
{
	if(!node)
		return 0;
	if(low==high)
		return gets(idx,seg_[node].val);
	int mid=(low+high)/2;
	if(idx>=low and idx<=mid)
		return max(gets(idx,seg_[node].val),QueryPos(low,mid,seg_[node].left,idx));
	else
		return max(gets(idx,seg_[node].val),QueryPos(mid+1,high,seg_[node].right,idx));
}
 
void exclude(int ind)
{
	int CurType=type[ind],CurLoc=loc[ind];
	it=st[CurType].find(CurLoc);
  	if(it==st[CurType].end())
      
    {
while(true)
    it++;}
	if(it==st[CurType].begin() and (++it)==st[CurType].end())
	{
		UpdateNeg(1,n,1,1,INF+99);
		st[CurType].erase(--it);
		return ;
	}
	--it;
	if(it==st[CurType].begin())
	{
		nxt=it;
		++nxt;
		UpdateNeg(1,n,1,1,*nxt);
		st[CurType].erase(it);
	}
	else if((++it)==st[CurType].end())
	{
		--it;
		pre=it;
		--pre;
		UpdatePos(1,n,1,n,*pre);
		st[CurType].erase(it);
	}
	else
	{
      	--it;
		pre=it;
		nxt=it;
		--pre;
		++nxt;
		UpdatePos(1,n,1,(*pre+*nxt)/2,*pre);
		UpdateNeg(1,n,1,(*pre+*nxt+1)/2,*nxt);	
		st[CurType].erase(it);
	}
	return ;
}

signed main()
{
	ios_base::sync_with_stdio(false);
 
	n=INF;
	timer=1;
	timers=1;
	cin>>N>>K>>Q;
	for(int A=1;A<=N;A++)
	{
		cin>>loc[A]>>type[A]>>X>>X;
		vec[type[A]].pb(loc[A]);
		st[type[A]].insert(loc[A]);
		order.pb(mp(X,A));
	}
	sort(order.begin(),order.end());
	for(int A=1;A<=K;A++)
	{
		if(vec[A].empty())
		{
			while(Q--)
				cout<<-1<<"\n";
			return 0;
		}
		sort(vec[A].begin(),vec[A].end());
		for(int B=1;B<vec[A].size();B++)
			UpdateNeg(1,n,1,(vec[A][B]+vec[A][B-1]+1)/2,vec[A][B]);
		for(int B=0;B<vec[A].size()-1;B++)
			UpdatePos(1,n,1,(vec[A][B]+vec[A][B+1])/2,vec[A][B]);
		UpdateNeg(1,n,1,1,*vec[A].begin());
		UpdatePos(1,n,1,n,vec[A].back());
	}
	for(int A=1;A<=Q;A++)
	{
		cin>>X>>Y;
		ask.pb(mp(Y,mp(X,A)));
	}
	sort(ask.begin(),ask.end());
	for(auto A:ask)
	{
		while(ptr<order.size() and order[ptr].first<A.first)
		{
			exclude(order[ptr].second);
			++ptr;
		}
		res[A.second.second]=max(QueryPos(1,n,1,A.second.first),QueryNeg(1,n,1,A.second.first));
	}
	for(int A=1;A<=Q;A++)
	{
		if(res[A]>=INF)
			res[A]=-1;
		cout<<res[A]<<"\n";
	}
	return 0;
}

Compilation message

new_home.cpp: In function 'int main()':
new_home.cpp:181:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int B=1;B<vec[A].size();B++)
               ~^~~~~~~~~~~~~~
new_home.cpp:183:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int B=0;B<vec[A].size()-1;B++)
               ~^~~~~~~~~~~~~~~~
new_home.cpp:196:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(ptr<order.size() and order[ptr].first<A.first)
         ~~~^~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 595 ms 704908 KB Output is correct
2 Correct 610 ms 705024 KB Output is correct
3 Correct 670 ms 705036 KB Output is correct
4 Execution timed out 5053 ms 705112 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 595 ms 704908 KB Output is correct
2 Correct 610 ms 705024 KB Output is correct
3 Correct 670 ms 705036 KB Output is correct
4 Execution timed out 5053 ms 705112 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2358 ms 928460 KB Output is correct
2 Correct 2416 ms 965324 KB Output is correct
3 Correct 1143 ms 965324 KB Output is correct
4 Correct 2518 ms 965324 KB Output is correct
5 Correct 2754 ms 975652 KB Output is correct
6 Correct 2544 ms 975652 KB Output is correct
7 Correct 1089 ms 975652 KB Output is correct
8 Correct 2325 ms 975652 KB Output is correct
9 Correct 2430 ms 975652 KB Output is correct
10 Correct 2680 ms 975652 KB Output is correct
11 Correct 1934 ms 975652 KB Output is correct
12 Correct 2058 ms 975652 KB Output is correct

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5068 ms 975652 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 595 ms 704908 KB Output is correct
2 Correct 610 ms 705024 KB Output is correct
3 Correct 670 ms 705036 KB Output is correct
4 Execution timed out 5053 ms 705112 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 595 ms 704908 KB Output is correct
2 Correct 610 ms 705024 KB Output is correct
3 Correct 670 ms 705036 KB Output is correct
4 Execution timed out 5053 ms 705112 KB Time limit exceeded
5 Halted 0 ms 0 KB -