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  1. // prob A contest 217 codeforces
  2. #include <bits/stdc++.h>
  3. using namespace std;
  4.  
  5. bool x[1005];
  6. bool y[1005];
  7.  
  8. int main()
  9. {
  10. 	int n;
  11. 	cin>>n;
  12. 	int ans=-1;
  13. 	memset(x,false,sizeof(x));
  14. 	memset(y,false,sizeof(y));
  15. 	for(int i=0;i<n;i++)
  16. 	{
  17. 		int xi,yi;
  18. 		cin>>xi>>yi;
  19. 		if(x[xi]==false && y[yi]==false) ans+=1;
  20. 		x[xi]=true;
  21. 		y[yi]=true;
  22. 	}
  23. 	cout<<ans<<endl;
  24. 	return 0;
  25. }
Success #stdin #stdout 0s 15240KB
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https://ideone.com/VupRF1
language:
C++14 (clang 8.0)
created:
6 years ago
visibility:
secret

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