Cod sursa(job #870855)

Utilizator loginLogin Iustin Anca login Data 4 februarie 2013 00:44:56
Problema Zoo Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 3.04 kb
# include <fstream>
# include <iostream>
# include <vector>
# include <algorithm>
# define DIM 100303
# define MAX 120000
# define pb push_back
# define mp make_pair
# define fs first
# define sc second
using namespace std;
int n, m, x[3*DIM], y[3*DIM], s[DIM], a[MAX], N, M, xx;
vector< pair<int, int> >X, Y, P, A[MAX], B[MAX], C[MAX], D[MAX];

void read ()
{
	ifstream fin ("zoo.in");
	fin>>n;
	fin.get();
	int x, y;
	char l[100];
	for(int j=1;j<=n;++j)
	{
		fin.getline(l, 100);
		int nr = 0, i=0, s=1;
		for(i=0;l[i];++i)
		{
			if (l[i]=='-')
				s=-1;
			else if (l[i]>='0' && l[i]<='9')
				nr=10*nr+l[i]-'0';
			else
			{
				nr*=s;
				X.pb(mp(nr, j));
				break;
			}
		}
		nr = 0;
		s=1;
		for(++i;l[i];++i)
			if (l[i]=='-')
				s=-1;
			else if (l[i]>='0' && l[i]<='9')
				nr=10*nr+l[i]-'0';
		nr*=s;
		Y.pb(mp(nr, j));
	}
	fin>>m;fin.get();
	for(int j=1;j<=m;++j)
	{
		fin.getline(l, 100);
		int nr = 0, i=0, s=1;
		for(i=0;l[i];++i)
			if (l[i]=='-')
				s=-1;
			else if (l[i]>='0' && l[i]<='9')
				nr=10*nr+l[i]-'0';
			else
			{
				nr*=s;
				X.pb(mp(nr, n+2*j-1));
				break;
			}
		nr = 0;
		s=1;
		for(++i;l[i];++i)
			if (l[i]=='-')
				s=-1;
			else if (l[i]>='0' && l[i]<='9')
				nr=10*nr+l[i]-'0';
			else
			{
				nr*=s;
				Y.pb(mp(nr, n+2*j-1));
				break;
			}
		nr = 0;
		s=1;
		for(++i;l[i];++i)
			if (l[i]=='-')
				s=-1;
			else if (l[i]>='0' && l[i]<='9')
				nr=10*nr+l[i]-'0';
			else
			{
				nr*=s;
				X.pb(mp(nr, n+2*j));
				break;
			}
		nr = 0;
		s=1;
		for(++i;l[i];++i)
			if (l[i]=='-')
				s=-1;
			else if (l[i]>='0' && l[i]<='9')
				nr=10*nr+l[i]-'0';
			
		nr*=s;
		Y.pb(mp(nr, n+2*j));
	}
}

void uniform()
{
	sort(X.begin(),X.end());
	sort(Y.begin(),Y.end());
	
	M=0;
	for(int i=0;i<X.size();++i)
	{
		if (i==0 || X[i-1].fs!=X[i].fs)
			++M;
		x[X[i].sc] = M;
	}
	
	N=0;
	for(int i=0;i<Y.size();++i)
	{
		if (i==0 || Y[i-1].fs!=Y[i].fs)
			++N;
		y[Y[i].sc] = N;
	}
}

void upd (int p)
{
	while(p<=N)
	{
		++a[p];
		p+=p^(p&(p-1));
	}
}

int query (int p)
{
	int r = 0;
	while(p>0)
	{
		r+=a[p];
		p-=p^(p&(p-1));
	}
	return r;
}

void comp(int xxx)
{
	while(xx<=xxx)
	{
		for(vector< pair<int,int> >::iterator I=A[xx].begin();I!=A[xx].end();++I)
			s[I->sc]+=query(I->fs);
		for(vector< pair<int,int> >::iterator I=B[xx].begin();I!=B[xx].end();++I)
			s[I->sc]+=query(I->fs);
		for(vector< pair<int,int> >::iterator I=C[xx].begin();I!=C[xx].end();++I)
			s[I->sc]-=query(I->fs);
		for(vector< pair<int,int> >::iterator I=D[xx].begin();I!=D[xx].end();++I)
			s[I->sc]-=query(I->fs);
		++xx;
	}
}	

void solve ()
{
	for(int i=1;i<=n;++i)
		P.pb(mp(x[i],y[i]));
	for(int i=1;i<=m;++i)
	{
		int j = n+2*i-1;
		A[x[j]-1].pb(mp(y[j]-1, i));
		B[x[j+1]].pb(mp(y[j+1], i));
		C[x[j]-1].pb(mp(y[j+1], i));
		D[x[j+1]].pb(mp(y[j]-1, i));
	}
	
	sort(P.begin(),P.end());
	/*
	comp(P[0].fs - 1);
	for(int i=0;i<P.size();++i)
	{
		if (i>0 && P[i-1].fs != P[i].fs)
			comp(P[i-1].fs);
		upd(P[i].sc);
	}
	comp(M);
	* */
}

int main ()
{
	read ();
	uniform ();
	solve ();
	
	freopen("zoo.out", "w", stdout);
	for(int i=1;i<=m;++i)
		printf("%d\n", s[i]);
		
	return 0;
}