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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define pb push_back
  4. #define lld I64d
  5. struct as
  6. {
  7. 	int a;
  8. 	int b;
  9. };
  10. bool fun(as a,as b)
  11. {
  12. 	if(a.a<b.a)
  13. 		return true;
  14. 	else
  15. 		return a.b<b.b;
  16. }
  17. int main()
  18. {
  19. 	int n;
  20. 	cin>>n;
  21. 	int c25=0,c50 = 0;
  22. 	for (int i = 0; i < n; ++i)
  23. 	{
  24. 		int a;cin>>a;
  25. 		if(a ==25)
  26. 			c25++;
  27. 		if(a == 50 )
  28. 		{
  29. 			c50++;
  30. 			if(c25>0)
  31. 			c25--;
  32. 			else
  33. 			{
  34. 				cout<<"NO";
  35. 				return 0;
  36. 			}
  37. 		}
  38. 		if(a==100)
  39. 		{
  40. 			if(c50>0 && c25>0)
  41. 			{
  42. 				c50--;
  43. 				c25--;
  44. 			}
  45. 			else if(c25>2)
  46. 			{
  47. 				c25= c25 -3;
  48. 			}
  49. 			else
  50. 			{
  51. 				cout<<"NO";
  52. 				return 0;
  53.  
  54. 			}
  55. 		}
  56. 	}
  57. 	cout<<"YES";
  58.  
  59.  
  60. }
Success #stdin #stdout 0s 3472KB
comments (?)
stdin
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2
25 100
stdout
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NO
https://ideone.com/HxqAh5
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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