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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. void solve() {
  5. 	int x, y;
  6. 	cin >> x >> y;
  7. 	if (x + 1 == y) {
  8. 		cout << "YES" << endl;
  9. 	} else if (x <= y) {
  10. 		cout << "NO" << endl;
  11. 	} else {
  12. 		int diff = x - y + 1;
  13. 		if (diff % 9 == 0) cout << "YES" << endl;
  14. 		else cout << "NO" << endl;
  15. 	}
  16. }
  17.  
  18. int main() {
  19. 	int t;
  20. 	cin >> t;
  21. 	while (t--) solve();
  22. }
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin
copy 
7
1 2
77 77
997 999
999 1
1000 1
1 11
18 1
stdout
copy 
YES
NO
NO
YES
NO
NO
YES
https://ideone.com/S2Tu0X
language:
C++14 (gcc 8.3)
created:
11 days ago
visibility:
public

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