Submission #207554

#	Time	Username	Problem	Language	Result	Execution time	Memory
207554		phamhoanghiep	Rectangles (IOI19_rect)	C++17	Compilation error	0 ms	0 KiB

rect

#include<bits/stdc++.h>
using namespace std;
int main() {
    int n,m;
    cin>>n>>m;
    int a[n][m];
    for(int i=0 ; i<n ; i++) {
        for(int j=0 ; j<m ; j++) {
            cin>>a[i][j];
        }
    }
    int cnt=0;
    for(int r1=1 ; r1<n-1 ; r1++) {
        for(int r2=r1 ; r2<n-1 ; r2++) {
            for(int c1=1 ; c1<m-1 ; c1++) {
                for(int c2=c1 ; c2<n-1 ; c2++) {
                    bool ok=true;
                    for(int i=r1 ; i<=r2 ; i++) {
                        for(int j=c1 ; j<=c2 ; j++) {
                            if(a[i][j]>=a[i][c1-1]) ok=false;
                            if(a[i][j]>=a[i][c2+1]) ok=false;
                            if(a[i][j]>=a[r1-1][j]) ok=false;
                            if(a[i][j]>=a[r2+1][j]) ok=false;
                        }
                    }
                    if(ok==true) cnt++;
                }
            }
        }
    }
    cout<<cnt;
}

Compilation message (stderr)

/tmp/ccbdpkew.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccRM4A5s.o:rect.cpp:(.text.startup+0x0): first defined here
/tmp/ccbdpkew.o: In function `main':
grader.cpp:(.text.startup+0x632): undefined reference to `count_rectangles(std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >)'
collect2: error: ld returned 1 exit status