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Cod sursa(job #600027)
#include <iostream>
#include <fstream>
#include <deque>
using namespace std;
fstream fin ("struti.in", ios::in);
fstream fout ("struti.out", ios::out);
#define INF 0x3f3f3f3f
#define MAXN 1010
int n, m, q, x, y;
int mat[MAXN][MAXN], matV[2][MAXN][MAXN], matH[2][MAXN][MAXN];
int mn, nmin;
void horz (bool (*cmp) (int, int), int idx, int k)
{
for (int i = 0; i < n; ++i) {
deque <int> d;
for (int j = 0; j < m; ++j) {
while (!d.empty () && cmp (mat[i][d.back ()], mat[i][j])) {
d.pop_back ();
}
d.push_back (j);
if (d.front () == j - k) {
d.pop_front ();
}
if (j >= k - 1) {
matH[idx][i][j] = mat[i][d.front ()];
}
}
}
}
void vert (bool (*cmp) (int, int), int idx, int k)
{
for (int i = 0; i < m; ++i) {
deque <int> d;
for (int j = 0; j < n; ++j) {
while (!d.empty () && cmp (matH[idx][d.back ()][i], matH[idx][j][i])) {
d.pop_back ();
}
d.push_back (j);
if (d.front () == j - k) {
d.pop_front ();
}
if (j >= k - 1) {
matV[idx][j][i] = matH[idx][d.front ()][i];
}
}
}
}
bool minC (int a, int b) {return a > b;};
bool maxC (int a, int b) {return a < b;};
int abs (int a) {return a > 0 ? a : -a;};
void combine (int sx, int sy)
{
for (int i = sy - 1; i < n; ++i) {
for (int j = sx - 1; j < m; ++j) {
int cm = abs (matV[1][i][j] - matV[0][i][j]);
if (cm < mn) {
mn = cm, nmin = 1;
} else if (cm == mn) {
nmin ++;
}
}
}
}
void doTest ()
{
fin >> x >> y;
horz (minC, 0, x);
horz (maxC, 1, x);
vert (minC, 0, y);
vert (maxC, 1, y);
mn = INF, nmin = 0;
combine (x, y);
if (x != y) {
horz (minC, 0, y);
horz (maxC, 1, y);
vert (minC, 0, x);
vert (maxC, 1, x);
combine (y, x);
}
fout << mn << " " << nmin << '\n';
}
int main ()
{
fin >> n >> m >> q;
for (int i = 0; i < n; ++i) {
for (int j = 0; j < m; ++j) {
fin >> mat[i][j];
}
}
for (int i = 0; i < q; ++i) {
doTest ();
}
fin.close ();
fout.close ();
return 0;
}