Pagini recente » Cod sursa (job #312321) | Cod sursa (job #1953163) | Cod sursa (job #821404) | Cod sursa (job #1972171) | Cod sursa (job #2815504)
#include <bits/stdc++.h>
#define N 1008
using namespace std;
ifstream fin("struti.in");
ofstream fout("struti.out");
const int INF = 1e4;
int p;
int n, m;
int A[N][N];
int mini[N][N], maxi[N][N];
void coloana_mini(int c, int dy)
{
int i;
deque<int> d;
for( i = 0; i < n; i++)
{
if(!d.empty() && d.front() == i - dy)
d.pop_front();
while(!d.empty() && A[d.back()][c] >= A[i][c])
d.pop_back();
d.push_back(i);
mini[i][c] = A[d.front()][c];
}
}
void calcul_mini(int dy)
{
int j;
for( j = 0; j < m; j++)
coloana_mini(j, dy);
}
void coloana_maxi(int c, int dy)
{
int i;
deque<int> d;
for( i = 0; i < n; i++)
{
if(!d.empty() && d.front() == i - dy)
d.pop_front();
while(!d.empty() && A[d.back()][c] <= A[i][c])
d.pop_back();
d.push_back(i);
maxi[i][c] = A[d.front()][c];
}
}
void calcul_maxi(int dy)
{
int j;
for( j = 0; j < m; j++)
coloana_maxi(j, dy);
}
void diferenta_min(int dx, int dy, int &dif_min, int &nr)
{
int i, j;
calcul_mini(dy);
calcul_maxi(dy);
for( i = dy - 1; i < n; i++)
{
deque<int> dmin, dmax;
for( j = 0; j < m; j++)
{
///dmin
if(!dmin.empty() && dmin.front() == j - dx)
dmin.pop_front();
while(!dmin.empty() && mini[i][dmin.back()] >= mini[i][j])
dmin.pop_back();
dmin.push_back(j);
///dmax
if(!dmax.empty() && dmax.front() == j - dx)
dmax.pop_front();
while(!dmax.empty() && maxi[i][dmax.back()] <= maxi[i][j])
dmax.pop_back();
dmax.push_back(j);
///answer
if(j < dx - 1) continue;
int rez_actual = maxi[i][dmax.front()] - mini[i][dmin.front()];
if(rez_actual < dif_min)
{
dif_min = rez_actual;
nr = 1;
}
else if(rez_actual == dif_min)
nr++;
}
}
}
void calcul(int dx, int dy)
{
int difmin = INF;
int nr;
diferenta_min(dx, dy, difmin, nr);
if (dx != dy)
diferenta_min(dy, dx, difmin, nr);
fout << difmin << " " << nr << "\n";
}
void Citire()
{
int i, j;
fin >> n >> m >> p;
for( i = 0; i < n; i++)
for( j = 0; j < m; j++)
fin >> A[i][j];
}
void Rezolvare()
{
int i;
for ( i = 0; i < p; i++)
{
int dx, dy;
fin >> dx >> dy;
calcul(dx, dy);
}
}
int main()
{
Citire();
Rezolvare();
return 0;
}