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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. #define IOS ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  5. #define endl "\n"
  6. #define int long long
  7.  
  8. const int N = 1e5 + 5;
  9.  
  10. int n, m, k;
  11. int x[N], y[N];
  12. int dx[4] = {0, 0, +1, +1};
  13. int dy[4] = {-1, +1, 0, 0};
  14.  
  15. int32_t main()
  16. {
  17. 	IOS;
  18. 	int t;
  19. 	cin>>t;
  20. 	while(t--)
  21. 	{
  22. 		cin>>n>>m>>k;
  23. 		int ans = 0;
  24. 		set<pair<int, int> > have;
  25. 		for(int i=1;i<=k;i++)
  26. 		{
  27. 			cin>>x[i]>>y[i];
  28. 			if(have.find({x[i], y[i]}) != have.end())
  29. 				assert(0);
  30. 			have.insert({x[i], y[i]});
  31. 		}
  32. 		for(int i=1;i<=k;i++)
  33. 		{
  34. 			for(int dir=0;dir<4;dir++)
  35. 			{
  36. 				pair<int, int> p = {x[i] + dx[dir], y[i] + dy[dir]};
  37. 				if(have.find(p) == have.end())
  38. 					ans++;
  39. 			}
  40. 		}
  41. 		cout<<ans<<endl;
  42. 	}
  43. 	return 0;
  44. }
Runtime error #stdin #stdout 0s 16800KB
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https://ideone.com/Q8qcwV
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
secret

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