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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	unsigned int n;
  6. 	cin >> n;
  7. 	unsigned int a, b, j = 0;
  8. 	for (n; n > 0; n--) {
  9. 		cin >> a >> b;
  10. 		if (b != a - 1) j++;
  11. 	}
  12. 	cout << j;
  13.  
  14. 	return 0;
  15. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin 
5
2 1
2 2
1 2
1 1
2 1
stdout 
3
https://ideone.com/XUeAKC
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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