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  1. #include<stdio.h>
  2. int Q[12];
  3. int main() {
  4. 	int n, ans = 0;
  5. 	scanf("%d", &n);
  6. 	for (int i = 0; i < n; i++) {
  7. 		int x, y;
  8. 		scanf("%d%d", &x, &y);
  9. 		y++;
  10. 		if (Q[x] == 0)Q[x] = y;
  11. 		else if (Q[x] != y)Q[x] = y, ans++;
  12. 	}
  13. 	printf("%d", ans);
  14. 	return 0;
  15. }
Success #stdin #stdout 0s 4192KB
comments (?)
stdin 
8
3 1
3 0
6 0
2 1
4 1
3 0
4 0
3 1
stdout 
3
https://ideone.com/Fwpq6F
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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