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  1. #include <iostream>
  2. #include <string>
  3. #include <stack>
  4. using namespace std;
  5.  
  6. int main ()
  7. {
  8. 	string xau;
  9. 	cin>>xau;
  10. 	stack <int> s;
  11. 	int ktAdd=0;
  12. 	for (int i=0; i<xau.length(); i++)
  13. 	{
  14. 		if (xau[i]=='(')
  15. 		{
  16. 			s.push(0);
  17. 		}
  18. 		else if (xau[i]==')')
  19. 		{
  20. 			int tmp=0;
  21. 			while (!s.empty() && s.top()!=0)
  22. 			{
  23. 				tmp+=s.top();
  24. 				s.pop();
  25. 			}
  26. 			if (!s.empty() && s.top()==0)
  27. 			{
  28. 				s.pop();
  29. 				s.push(tmp);
  30. 			}
  31. 		}
  32. 		else if (xau[i]>='0' && xau[i]<='9')
  33. 		{
  34. 			int so=xau[i]-'0';
  35. 			if (!s.empty())
  36. 			{
  37. 				int tmp = s.top();
  38. 				s.pop();
  39. 				tmp = tmp * so;
  40. 				s.push(tmp);
  41. 			} else 
  42. 			{}
  43. 		}
  44. 		else if (xau[i]=='C')
  45. 		{
  46. 			s.push(12);
  47. 		}
  48. 		else if (xau[i]=='H')
  49. 		{
  50. 			s.push(1);
  51. 		}
  52. 		else if (xau[i]=='O')
  53. 		{
  54. 			s.push(16);
  55. 		}
  56. 	}
  57. 	int S=0;
  58. 	while (!s.empty())
  59. 	{
  60. 		S+=s.top();
  61. 		s.pop();
  62. 	}
  63. 	cout<<S;
  64. 	return 0;
  65. }
Success #stdin #stdout 0s 15240KB
comments ()
stdin
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((CH)2(OH2H)(C(H))O)3
stdout
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222
https://ideone.com/FRWxHM
v- PTIT121E - Nguyên tố hóa học
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
secret

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