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  1. #include <cstdio>
  2. #include <cstring>
  3. #include <vector>
  4. using namespace std;
  5.  
  6. char t[1000005], p[40];
  7. int n, m, q, s, pi[40];
  8. bool none, boom;
  9.  
  10. void prefix(int m)
  11. {
  12. 	int k = -1;
  13.  
  14. 	pi[0] = -1;
  15.  
  16. 	for (int q = 1; q < m; q++) {
  17. 		while (k > -1 && p[k + 1] != p[q]) k = pi[k];
  18. 		if (p[k + 1] == p[q]) k++;
  19. 		pi[q] = k;
  20. 	}
  21. }
  22.  
  23. int main(void)
  24. {
  25. 	fgets(t, 1000000, stdin);
  26. 	fgets(p, 36, stdin);
  27.  
  28. 	t[strlen(t) - 1] = '\0';
  29. 	p[strlen(p) - 1] = '\0';
  30.  
  31. 	n = strlen(t);
  32. 	m = strlen(p);
  33.  
  34. 	prefix(m);
  35.  
  36. 	q = -1;
  37. 	s = -1;
  38. 	int i = 0;
  39. 	while(i<n) {
  40. 		if (t[i] == '!') {
  41. 			i++;
  42. 			continue;
  43. 		}
  44. 		while (q > -1 && p[q + 1] != t[i]) {
  45. 			q = pi[q];
  46. 			s = -1;
  47. 		}
  48. 		if (p[q + 1] == t[i]) {
  49. 			if (s==-1) s = i;
  50. 			q++;
  51. 		}
  52. 		if (q == m-1) {
  53. 			for (int j = s; j <= i; j++)
  54. 				t[j] = '!';
  55. 			boom = true;
  56. 			q = -1;
  57. 		}
  58. 		if (boom) {
  59. 			boom = false;
  60. 			i = s - (m - 1); s = -1;
  61. 		}
  62. 		else i++;
  63. 	}
  64.  
  65. 	none = true;
  66. 	for (int i = 0; i < n; i++) {
  67. 		if (t[i] != '!') {
  68. 			none = false;
  69. 			printf("%c", t[i]);
  70. 		}
  71. 	}
  72. 	if (none) puts("FRULA");
  73.  
  74.  
  75. 	return 0;
  76. }
Success #stdin #stdout 0s 4384KB
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mirkovniz
https://ideone.com/1CZ9A4
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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