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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. #define int int64_t
  6.  
  7. void solve() {
  8. 	int N, M, K;
  9. 	cin >> N >> M >> K;
  10. 	map<int, map<int, int>> A;
  11. 	int ans = 0;
  12. 	int dx[] = {1, 0, -1, 0};
  13. 	int dy[] = {0, 1, 0, -1};
  14. 	while(K--) {
  15. 		int x, y;
  16. 		cin >> x >> y;
  17. 		for(int i = 0; i < 4; i++) {
  18. 			int nx = x + dx[i];
  19. 			int ny = y + dy[i];
  20. 			ans += A[nx][ny] ? -1 : 1;
  21. 		}
  22. 		A[x][y] = 1;
  23. 	}
  24. 	cout << ans << endl;
  25. }
  26.  
  27. signed main() {
  28. 	//freopen("input.txt", "r", stdin);
  29. 	ios::sync_with_stdio(0);
  30. 	cin.tie(0);
  31. 	int t;
  32. 	cin >> t;
  33. 	while(t--) {
  34. 		solve();
  35. 	}
  36. }
  37.  
Success #stdin #stdout 0s 15240KB
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https://ideone.com/1WkUno
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
secret

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