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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	ios_base::sync_with_stdio(false); cin.tie(NULL);
  6. 	int N, p[105], q[105], cnt = 0;
  7. 	cin >> N;
  8. 	for(int i = 0; i < N; i++) {
  9. 		cin >> p[i] >> q[i];
  10. 		if((q[i] - p[i]) >= 2) {
  11. 			cnt++;
  12. 		}
  13. 	}
  14. 	cout << cnt;
  15. 	return 0;
  16. }
Success #stdin #stdout 0s 5444KB
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stdin
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3
1 10
0 10
10 10
stdout
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2
https://ideone.com/PheMYa
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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