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Cod sursa(job #239509)
#include <stdio.h>
#include <ctype.h>
#include <vector>
#include <algorithm>
using namespace std;
int c,n,m,ind;
char buf[50];
vector <pair<int,int> > gropi(100000);
int getn()
{
int ans=0;
while (isdigit(buf[ind]))
{
ans=ans*10+buf[ind]-'0';
++ind;
}
++ind;
return ans;
}
void main()
{
FILE* fin=fopen("gropi.in","r");
FILE* fout=fopen("gropi.out","w");
fscanf(fin,"%d%d\n",&c,&n);
for (int q=0;q<n;++q)
{
fgets(buf,50,fin);
ind=0;
int x=getn(), y=getn();
gropi[q]=make_pair(y,x);
}
sort(gropi.begin(),gropi.begin()+n);
fscanf(fin,"%d\n",&m);
for (int q=0;q<m;++q)
{
fgets(buf,50,fin);
ind=0;
int x1=getn(), y1=getn(), x2=getn(), y2=getn(), ans=abs(y2-y1)+1;
int i, akt=x1;
if (y1<y2)
{
i=lower_bound(gropi.begin(),gropi.begin()+n,make_pair(y1,x1))-gropi.begin();
if (gropi[i].first==y1) ++i;
while (i<n && gropi[i].first<y2)
{
if (gropi[i].second==akt)
{
++ans;
akt=3-akt;
}
++i;
}
}
else
{
i=upper_bound(gropi.begin(),gropi.begin()+n,make_pair(y1,x1))-gropi.begin();
if (gropi[i].first==y1) --i;
while (i>=0 && gropi[i].first>y2)
{
if (gropi[i].second==akt)
{
++ans;
akt=3-akt;
}
--i;
}
}
if (akt!=x2) ++ans;
fprintf(fout,"%d\n",ans);
}
fclose(fin);
fclose(fout);
return 0;
}