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  1. #define _CRT_SECURE_NO_DEPRECATE
  2. #include <iostream>
  3. #include <string>
  4. #include <iomanip>
  5. #include <algorithm>
  6. #include <cmath>
  7. #include <sstream>
  8. #include <vector>
  9. #include <queue>
  10. #include <stack>
  11. #include <set>
  12. #include <map>
  13. using namespace std;
  14. #define _2d(a,row,col,type) {a=new type*[row]; for (int i=0;i<col;i++) a[i]=new type[col];}
  15. #define rep(i,n) for(int i=0;i<int(n);i++)
  16. #define repd(i,n) for(int i=n-1;i>=0;i--)
  17. #define repi(i,a,n) for(int i=int(a);i<int(n);i++)
  18. #define scn(a,n) {rep(i,n) cin>>a[i];}
  19. #define scn2(a,row,col) {rep(i,row) rep(j,row) cin>>a[i][j];}
  20. #define ll long long
  21. #define ul unsigned long
  22. #define ull unsigned long long
  23. #define ld long double
  24. #define vi vector<int>
  25. #define vll vector<ll>
  26. #define vl vector<long>;
  27.  
  28.  
  29. #define REP(i, n) for (int i = 0; i < (int)(n); ++i)
  30.  
  31. 	const int MAXN = 1 << 21;
  32. 	char * S;
  33. 	int N, gap;
  34. 	int sa[MAXN], pos[MAXN], tmp[MAXN], lcp[MAXN];
  35.  
  36. 	bool sufCmp(int i, int j)
  37. 	{
  38. 		if (pos[i] != pos[j])
  39. 			return pos[i] < pos[j];
  40. 		i += gap;
  41. 		j += gap;
  42. 		return (i < N && j < N) ? pos[i] < pos[j] : i > j;
  43. 	}
  44.  
  45. 	void buildSA(string s)
  46. 	{
  47. 		N = s.length();
  48. 		REP(i, N) sa[i] = i, pos[i] = s[i];
  49. 		for (gap = 1;; gap *= 2)
  50. 		{
  51. 			sort(sa, sa + N, sufCmp);
  52. 			REP(i, N - 1) tmp[i + 1] = tmp[i] + sufCmp(sa[i], sa[i + 1]);
  53. 			REP(i, N) pos[sa[i]] = tmp[i];
  54. 			if (tmp[N - 1] == N - 1) break;
  55. 		}
  56. 	}
  57.  
  58. 	void buildLCP(string s)
  59. 	{
  60. 		for (int i = 0, k = 0; i < N; ++i) if (pos[i] != N - 1)
  61. 		{
  62. 			for (int j = sa[pos[i] + 1]; s[i + k] == s[j + k];)
  63. 				++k;
  64. 			lcp[pos[i]] = k;
  65. 			if (k)--k;
  66. 		}
  67. 	}
  68.  
  69. int main()
  70. {
  71. 	int t;
  72. 	cin >> t;
  73. 	string s;
  74. 	while (t--){
  75. 		cin >> s;
  76. 		s += '$';
  77. 		buildSA(s);
  78. 		buildLCP(s);
  79. 		int res = 0;
  80. 		rep(i, s.length()){
  81. 			res += sa[i] - lcp[i-1];
  82. 		}
  83. 		cout << res << endl;
  84. 	}
  85. 	return 0;
  86. }
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https://ideone.com/u4z9zz
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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