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  1. // created by : eaugene
  2. // time : 17:04:26 OCT 17 , 2018
  3.  
  4.  
  5. #include <bits/stdc++.h>
  6. using namespace std;
  7.  
  8. int main() {
  9. 	// your code goes here
  10.  
  11. 	int n=0,m=0;
  12. 	cin>>n>>m;
  13.  
  14. 	int a[n],b[m];
  15.  
  16. 	for(int i=0;i<n;i++)
  17. 	{
  18. 		cin>>a[i];
  19. 	}
  20.  
  21. 	int x[100001];
  22. 	memset(x,0,sizeof(x));
  23.  
  24. 	int ans[n+2];
  25. 	memset(ans,0,sizeof(ans));
  26. 	for(int i=n-1;i>=0;i--)
  27. 	{
  28. 		int j=a[i];
  29. 		if(x[j]==0)
  30. 		{
  31. 			ans[i+1]=1;
  32. 			//x[j]++;
  33. 		}
  34. 		x[j]++;
  35. 	//	cout<<ans[i+1]<<"^^^^";
  36. 		ans[i+1]+=ans[i+2];
  37. 	//	cout<<ans[i+1]<<endl;
  38. 	}
  39. 	int k;
  40. 	for(int i=0;i<m;i++)
  41. 	{
  42. 		cin>>k;
  43. 		cout<<ans[k]<<" ";
  44. 	}
  45. 	return 0;
  46. }
Success #stdin #stdout 0s 15496KB
comments (?)
stdin
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7 10
1 3 8 6 2 2 7
4 2 6 3 4 4 6 2 7 4
stdout
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3 5 2 4 3 3 2 5 1 3
https://ideone.com/x0hiTh
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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