#include "rect.h" #include <bits/stdc++.h> #pragma gcc-optimize("o3, unroll-loops") using namespace std; long long count_rectangles(std::vector<std::vector<int> > a) { int n=a.size(), m=a[0].size(); long long res=0; for (int r1=1; r1<n-1; r1++) { for (int c1=1; c1<m-1; c1++) { for (int r2=r1; r2<n-1; r2++) { vector<int> mx(n, 0); for (int c2=c1; c2<m-1; c2++) { int tmp=0, f=0; for (int i=r1; i<=r2; i++) tmp=max(tmp, a[i][c2]), mx[i]=max(mx[i], a[i][c2]); if (tmp>=a[r1-1][c2]||tmp>=a[r2+1][c2]) break; for (int i=r1; i<=r2; i++) if (mx[i]>=a[i][c2+1]||mx[i]>=a[i][c1-1]) f=1; //if (r1==4&&r2==4&&c1==2&&c2==3) cout<<"here "<<mx[r1]<<'\n'; if (!f) res++; //cout<<"debug "<<r1<<' '<<c1<<' '<<r2<<' '<<c2<<'\n'; } } } } return res; }

rect.cpp:3: warning: ignoring '#pragma gcc ' [-Wunknown-pragmas]
    3 | #pragma gcc-optimize("o3, unroll-loops")
      |