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  1. #include <stdio.h>
  2. #include <iostream>
  3. #include <deque>
  4. #include <string.h>
  5. #include <string>
  6.  
  7. using namespace std;
  8.  
  9. int T, n;
  10. char p[1000001];
  11. char num[1000000];
  12. int flag;
  13. deque<int> d;
  14. int D(bool R) {
  15. 	if (d.empty()) {
  16. 		return 0;
  17. 	}
  18. 	if (R) {
  19. 		d.pop_front();
  20. 	}
  21. 	else {
  22. 		d.pop_back();
  23. 	}
  24. 	return 1;
  25. }
  26.  
  27. int main() {
  28. 	bool R = true;
  29. 	string str = "";
  30. 	int j = 0;
  31. 	scanf("%d", &T);
  32.  
  33. 	for (int i = 0; i < T; i++) {
  34. 		R = true;
  35. 		str = "";
  36. 		flag = 0;
  37. 		j = 0;
  38. 		scanf("%s", p);
  39. 		scanf("%d", &n);
  40. 		scanf("%s", num);
  41. 		while (n) {
  42. 			if (num[j] >= 49 && num[j] <= 57) {
  43. 				str += num[j];
  44. 				if (num[j + 1] == ',' || num[j+1]==']') {
  45. 					n--;
  46. 					d.push_back(atoi(str.c_str()));
  47. 					str = "";
  48. 				}
  49.  
  50. 			}
  51. 			j++;
  52. 		}
  53. 		for (int i = 0; i < strlen(p); i++) {
  54. 			if (p[i] == 'R') {
  55. 				R = !R;
  56. 			}
  57. 			else if (p[i] == 'D') {
  58. 				if (!D(R)) {
  59. 					flag = 1;
  60. 					printf("error\n");
  61. 					break;
  62. 				}
  63. 			}
  64. 		}
  65. 		if (!flag) {
  66. 			printf("[");
  67. 			while (!d.empty()) {
  68. 				if (R) {
  69. 					if (d.size() == 1) {
  70. 						printf("%d]\n", d.front());
  71. 						d.pop_front();
  72. 					}
  73. 					else {
  74. 						printf("%d,", d.front());
  75. 						d.pop_front();
  76. 					}
  77. 				}
  78. 				else {
  79. 					if (d.size() == 1) {
  80. 						printf("%d]\n", d.back());
  81. 						d.pop_back();
  82. 					}
  83. 					else {
  84. 						printf("%d,", d.back());
  85. 						d.pop_back();
  86. 					}
  87. 				}
  88. 			}
  89. 		}
  90. 	}
  91. 	return 0;
  92. }
Runtime error #stdin #stdout 0s 4560KB
comments (?)
stdin
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1
R
1
[10]
stdout
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Standard output is empty
https://ideone.com/G4CZol
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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