oj.uz

Submission #99858

# Submission time Handle Problem Language Result Execution time Memory
99858 2019-03-07T22:29:05 Z TadijaSebez New Home (APIO18_new_home) C++11
0 / 100
 5000 ms 563892 KB 
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define mt make_tuple
const int N=300050;
const int M=4*N;
const int lim=1e8;
int x[N],t[N],l[N],r[N],qx[N],qy[N],active,ans[N];
set<pair<int,int>> all[N];
map<pair<int,int>,int> T[N];
vector<tuple<int,int,int,int>> L,R;
void Put(int t, int l, int r, int ins, int tme)
{
	int mid=l+r>>1;
	if(l>r) return;
	if(ins==0)
	{
		if(l!=-2*lim) T[t][mp(l,mid)]=tme;
		if(r!=2*lim) T[t][mp(mid+1,r)]=tme;
	}
	else
	{
		if(l!=-2*lim) L.pb(mt(T[t][mp(l,mid)],tme-1,l,mid));
		if(r!=2*lim) R.pb(mt(T[t][mp(mid+1,r)],tme-1,mid+1,r));
	}
}
int root,ls[M],rs[M],tsz;
vector<pair<int,int>> LST[M],RST[M];
vector<tuple<int,int,int>> STL[M],STR[M];
void AddL(int &c, int ss, int se, int qs, int qe, int l, int r)
{
	if(qs>qe || qs>se || ss>qe) return;
	if(!c) c=++tsz;
	if(qs<=ss && qe>=se){ LST[c].pb(mp(l,r));return;}
	int mid=ss+se>>1;
	AddL(ls[c],ss,mid,qs,qe,l,r);
	AddL(rs[c],mid+1,se,qs,qe,l,r);
}
void AddR(int &c, int ss, int se, int qs, int qe, int l, int r)
{
	if(qs>qe || qs>se || ss>qe) return;
	if(!c) c=++tsz;
	if(qs<=ss && qe>=se){ RST[c].pb(mp(l,r));return;}
	int mid=ss+se>>1;
	AddR(ls[c],ss,mid,qs,qe,l,r);
	AddR(rs[c],mid+1,se,qs,qe,l,r);
}
void Build(int c, int ss, int se)
{
	if(!c) return;
	int mx=-lim;
	for(int i=0;i<LST[c].size();i++)
	{
		if(LST[c][i].second>=mx)
		{
			STL[c].pb(mt(max(LST[c][i].first,mx),LST[c][i].second,LST[c][i].first));
			mx=LST[c][i].second+1;
			//printf("%i %i %i\n",get<0>(STL[c].back()),get<1>(STL[c].back()),get<2>(STL[c].back()));
		}
	}
	int mn=lim*2;
	for(int i=0;i<RST[c].size();i++)
	{
		if(RST[c][i].first<=mn)
		{
			STR[c].pb(mt(RST[c][i].first,min(RST[c][i].second,mn),RST[c][i].second));
			mn=RST[c][i].first-1;
			//printf("%i %i %i\n",get<0>(STR[c].back()),get<1>(STR[c].back()),get<2>(STR[c].back()));
		}
	}
	reverse(STR[c].begin(),STR[c].end());
	if(ss==se) return;
	int mid=ss+se>>1;
	Build(ls[c],ss,mid);
	Build(rs[c],mid+1,se);
}
int Solve(int c, int ss, int se, int qi, int x)
{
	int ans=0;
	while(STL[c].size() && get<0>(STL[c].back())>x) STL[c].pop_back();
	while(STR[c].size() && get<0>(STR[c].back())>x) STR[c].pop_back();
	if(STL[c].size() && get<1>(STL[c].back())>=x) ans=max(ans,x-get<2>(STL[c].back()));
	if(STR[c].size() && get<1>(STR[c].back())>=x) ans=max(ans,get<2>(STR[c].back())-x);
	if(ss==se) return ans;
	int mid=ss+se>>1;
	if(qi<=mid) return max(ans,Solve(ls[c],ss,mid,qi,x));
	else return max(ans,Solve(rs[c],mid+1,se,qi,x));
}
int main()
{
	int n,k,q,i;
	scanf("%i %i %i",&n,&k,&q);
	vector<tuple<int,int,int>> events;
	for(i=1;i<=n;i++)
	{
		scanf("%i %i %i %i",&x[i],&t[i],&l[i],&r[i]);
		events.pb(mt(l[i],0,i));
		events.pb(mt(r[i]+1,1,i));
	}
	for(i=1;i<=q;i++)
	{
		scanf("%i %i",&qx[i],&qy[i]);
		events.pb(mt(qy[i],2,i));
	}
	for(i=1;i<=k;i++)
	{
		all[i].insert(mp(-2*lim,-1));
		all[i].insert(mp(2*lim,0));
		Put(i,-2*lim,2*lim,0,2*lim);
	}
	sort(events.begin(),events.end());
	vector<int> work;
	for(auto e:events)
	{
		int tme=get<0>(e);
		int type=get<1>(e);
		int i=get<2>(e);
		if(type!=2)
		{
			if(type==0) all[t[i]].insert(mp(x[i],i));
			auto it=all[t[i]].find(mp(x[i],i));
			int lid=0,rid=0;
			if(it!=all[t[i]].begin()) it--,lid=it->first,it++;
			it++;if(it!=all[t[i]].end()) rid=it->first;it--;
			if(lid && rid) Put(t[i],lid,rid,type^1,tme);
			if(lid) Put(t[i],lid,x[i],type,tme);
			if(rid) Put(t[i],x[i],rid,type,tme);
			if(all[t[i]].size()==3) active+=type==0?1:-1;
			if(type==1) all[t[i]].erase(mp(x[i],i));
		}
		else
		{
			if(active!=k) ans[i]=-1;
			else work.pb(i);
		}
		//printf("%i %i %i %i\n",tme,type,i,active);
	}
	sort(L.begin(),L.end(),[](tuple<int,int,int,int> a, tuple<int,int,int,int> b){ return get<2>(a)<get<2>(b);});
	sort(R.begin(),R.end(),[](tuple<int,int,int,int> a, tuple<int,int,int,int> b){ return get<3>(a)>get<3>(b);});
	sort(work.begin(),work.end(),[&](int a, int b){ return qx[a]>qx[b];});
	vector<int> id;
	for(auto tp:L) id.pb(get<0>(tp)),id.pb(get<1>(tp));
	for(auto tp:R) id.pb(get<0>(tp)),id.pb(get<1>(tp));
	for(int idx:work) id.pb(qy[idx]);
	sort(id.begin(),id.end());
	id.erase(unique(id.begin(),id.end()),id.end());
	auto Get=[&](int x){ return lower_bound(id.begin(),id.end(),x)-id.begin()+1;};
	for(auto tp:L) AddL(root,1,id.size(),Get(get<0>(tp)),Get(get<1>(tp)),get<2>(tp),get<3>(tp));
	for(auto tp:R) AddR(root,1,id.size(),Get(get<0>(tp)),Get(get<1>(tp)),get<2>(tp),get<3>(tp));
	Build(root,1,id.size());
	for(int idx:work) ans[idx]=Solve(root,1,id.size(),qy[idx],qx[idx]);
	for(int i=1;i<=q;i++) printf("%i\n",ans[i]);
	return 0;
}

Compilation message

new_home.cpp: In function 'void Put(int, int, int, int, int)':
new_home.cpp:15:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=l+r>>1;
          ~^~
new_home.cpp: In function 'void AddL(int&, int, int, int, int, int, int)':
new_home.cpp:36:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=ss+se>>1;
          ~~^~~
new_home.cpp: In function 'void AddR(int&, int, int, int, int, int, int)':
new_home.cpp:45:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=ss+se>>1;
          ~~^~~
new_home.cpp: In function 'void Build(int, int, int)':
new_home.cpp:53:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<LST[c].size();i++)
              ~^~~~~~~~~~~~~~
new_home.cpp:63:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<RST[c].size();i++)
              ~^~~~~~~~~~~~~~
new_home.cpp:74:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=ss+se>>1;
          ~~^~~
new_home.cpp: In function 'int Solve(int, int, int, int, int)':
new_home.cpp:86:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=ss+se>>1;
          ~~^~~
new_home.cpp: In function 'int main()':
new_home.cpp:93:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i %i %i",&n,&k,&q);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~
new_home.cpp:97:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%i %i %i %i",&x[i],&t[i],&l[i],&r[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:103:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%i %i",&qx[i],&qy[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 141304 KB Output is correct
2 Correct 130 ms 141304 KB Output is correct
3 Correct 127 ms 141340 KB Output is correct
4 Incorrect 128 ms 141284 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 141304 KB Output is correct
2 Correct 130 ms 141304 KB Output is correct
3 Correct 127 ms 141340 KB Output is correct
4 Incorrect 128 ms 141284 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2964 ms 563892 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5043 ms 453420 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 141304 KB Output is correct
2 Correct 130 ms 141304 KB Output is correct
3 Correct 127 ms 141340 KB Output is correct
4 Incorrect 128 ms 141284 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 141304 KB Output is correct
2 Correct 130 ms 141304 KB Output is correct
3 Correct 127 ms 141340 KB Output is correct
4 Incorrect 128 ms 141284 KB Output isn't correct
5 Halted 0 ms 0 KB -