Submission #145509

#	Time	Username	Problem	Language	Result	Execution time	Memory
145509		cfalas	Rectangles (IOI19_rect)	C++14	0 / 100	74 ms	28372 KiB

rect

#include "rect.h"

long long count_rectangles(std::vector<std::vector<int> > a) {
	long long ans=0;
	for(int i=1;i<a.size()-1;i++){
		for(int j=1;j<a[i].size()-1;j++){
			if(a[i][j]==0 && a[i][j+1]==1 && a[i][j-1]==1 && a[i+1][j]==1 && a[i-1][j]==1) ans++;
		}
	}
	return ans;
}

Compilation message (stderr)

rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:5:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=1;i<a.size()-1;i++){
              ~^~~~~~~~~~~
rect.cpp:6:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=1;j<a[i].size()-1;j++){
               ~^~~~~~~~~~~~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 7
• Subtask 3: 0 / 12
• Subtask 4: 0 / 22
• Subtask 5: 0 / 10
• Subtask 6: 0 / 13
• Subtask 7: 0 / 28