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  1. #include<iostream>
  2. #include<string>
  3. #include<vector>
  4. #include<map>
  5. #include<algorithm>
  6. #include<queue>
  7. #include<fstream>
  8. #include<bitset>
  9. using namespace std;
  10.  
  11. int main()
  12. {
  13. 	string t, p;
  14. 	int q;
  15. 	cin >> t >> p >> q;
  16.  
  17. 	vector<int> sum1(t.size(), 0);
  18. 	for (int i = 0; i <= t.size()-p.size(); i++)
  19. 	{
  20. 		if (p == t.substr(i, p.size()))
  21. 			sum1[i+p.size()-1]++;
  22. 	}
  23. 	for (int i = 1; i < sum1.size(); i++)
  24. 		sum1[i] += sum1[i - 1];
  25.  
  26. 	vector<int> sum2(t.size(), 0);
  27. 	for (int i = 0; i <= t.size() - p.size(); i++)
  28. 	{
  29. 		if (p == t.substr(i, p.size()))
  30. 			sum2[i]++;
  31. 	}
  32. 	for (int i = 1; i < sum2.size(); i++)
  33. 		sum2[i] += sum2[i - 1];
  34.  
  35. 	while (q--)
  36. 	{
  37. 		int a, b;
  38. 		cin >> a >> b;
  39. 		a--;
  40. 		b--;
  41. 		int ans;
  42. 		if (a != 0)
  43. 			ans = sum1[b] - sum2[a - 1];
  44. 		else
  45. 			ans = sum1[b];
  46. 		if (ans < 0)
  47. 			ans = 0;
  48. 		cout << ans << endl;
  49. 	}
  50.  
  51. 	return 0;
  52. }
Runtime error #stdin #stdout 0s 4572KB
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Standard input is empty
stdout
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Standard output is empty
https://ideone.com/0RZg8O
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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