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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int x, y;
  5.  
  6. void solve()
  7. {
  8. 	int n = x+y;
  9. 	if(x > y)
  10. 	{
  11. 		cout<<"NO\n"; return;
  12. 	}
  13. 	if(x == 0 && y % 2 == 0)
  14. 	{
  15. 		cout<<"NO\n"; return;
  16. 	}
  17. 	if((x+y)%2 == 1)
  18. 	{
  19. 		cout<<"YES\n";
  20. 		int diff = x-y;
  21. 		int tmp = 1;
  22. 		for(int i=1; i<=x*2; i+=1)
  23. 		{
  24. 			cout<<tmp<<" "<<tmp+1<<'\n';
  25. 			tmp++;
  26. 		}
  27. 		for(int i=tmp+1; i<=n; i+=1)
  28. 		{
  29. 			cout<<1<<" "<<i<<'\n';
  30. 		}
  31. 	}
  32. 	else
  33. 	{
  34. 		cout<<"YES\n";
  35. 		int diff = x-y;
  36. 		int tmp = 1;
  37. 		for(int i=1; i<=x*2-1; i+=1)
  38. 		{
  39. 			cout<<tmp<<" "<<tmp+1<<'\n';
  40. 			tmp++;
  41. 		}
  42. 		for(int i=tmp+1; i<=n; i+=1)
  43. 		{
  44. 			cout<<1<<" "<<i<<'\n';
  45. 		}
  46. 	}
  47. }
  48.  
  49. int main() {
  50. 	int test = 1;
  51. 	cin>>test;
  52. 	while(test--)
  53. 	{
  54. 		cin>>x>>y;
  55. 		solve();
  56. 	}
  57. 	return 0;
  58. }
Success #stdin #stdout 0s 5324KB
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stdin
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4
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stdout
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YES
1 2
1 3
1 4
1 5
YES
1 2
1 3
1 4
1 5
YES
1 2
1 3
1 4
1 5
YES
1 2
1 3
1 4
1 5
https://ideone.com/NF5qUe
language:
C++ (gcc 8.3)
created:
4 hours ago
visibility:
public

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