#include "rect.h"
#include<bits/stdc++.h>
using namespace std;
const int N = 2510;
int n, m;
int v[N][N];
long long count_rectangles(std::vector<std::vector<int> > a) {
n = a.size();
m = a[0].size();
for(int i = 0;i < n;i++){
for(int j = 0;j < m;j++){
v[i+1][j+1] = a[i][j];
}
}
long long res = 0;
for(int a = 2;a < n;a++){
for(int b = 2;b < m;b++){
for(int c = a;c < n;c++){
for(int d = b;d < m;d++){
bool aux = true;
for(int i = a;i <= c;i++){
int linha = 0;
for(int j = b;j <= d;j++) linha = max(linha, v[i][j]);
if(linha >= min(v[i][b-1], v[i][d+1])){
aux = false;
break;
}
}
if(!aux) continue;
for(int j = b;j <= d;j++){
int coluna = 0;
for(int i = a;i <= c;i++) coluna = max(coluna, v[i][j]);
if(coluna >= min(v[a-1][j], v[c+1][j])){
aux = false;
break;
}
}
if(aux) res++;
}
}
}
}
return res;
}
