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Cod sursa(job #232926)
#include <stdio.h>
#include <fstream.h>
#include <stdlib.h>
#define g 100005
using namespace std;
int N, C;
struct bar
{
int x,y;
};
bar v[g];
int compare(const void *a, const void *b)
{
return (((bar*)a)->x-((bar*)b)->x);
}
int S[g];
int search1(int X) {
int st = 0, dr = N-1, mij;
while (st != dr) {
mij = (st + dr)/2;
if (v[mij].x <= X) st = mij+1;
else dr = mij;
}
return st;
}
int search2(int X) {
int st = 0, dr = N-1, mij;
while (st != dr) {
mij = (st + dr + 1)/2;
if (v[mij].x < X) st = mij;
else dr = mij-1;
}
return st;
}
void swap (bar &A, bar &B)
{
bar q=A;
A=B;
B=q;
}
int main() {
freopen("gropi.in", "r", stdin);
freopen("gropi.out", "w", stdout);
scanf("%d %d", &C, &N);
for (int i = 0; i < N; ++i)
scanf("%d %d", &v[i].y, &v[i].x);
v[N].x=0;v[N++].y=0;
v[N].x=C+1;v[N++].y=0;
qsort(v,N,sizeof(bar),compare);
S[0] = v[0].y != v[1].y;
for (i = 1; i + 1 < N; ++i)
S[i] = S[i-1] + (v[i].y != v[i+1].y);
int M;
for (scanf("%d", &M); M; --M) {
bar A,B;
scanf("%d %d %d %d", &A.y, &A.x, &B.y, &B.x);
if (B.x < A.x) swap(A, B);
int p1 = search1(A.x);
if (v[p1].x >= B.x)
printf("%d\n", B.x-A.x + 1 + (A.y != B.y));
else {
int p2 = search2(B.x);
int sz = S[p2-1] - S[p1-1];
if (A.y == v[p1].y) ++sz;
if (B.y == v[p2].y) ++sz;
sz += B.x-A.x+1;
printf("%d\n", sz);
}
}
return 0;
}