Codeforces 368B. Sereja and Suffixes Solution

Solve in C++:

1. ///**********ALLAH IS ALMIGHTY************///
2. ///AH Tonmoy
3. ///Department of CSE
4. ///Islamic University,Bangladesh
5. #include<iostream>
6. #include<set>
7. using namespace std;
8. set<int>s;
9. int main()
10. {
11. set<int>s;
12. int m,n,k,s1[100009],i,r,j;
13. cin>>n>>m;
14. for(i=1; i<=n; i++)
15. {
16. cin>>s1[i];
17. }
18. for(i=n; i>0; i--)
19. {
20. s.insert(s1[i]);
21. s1[i]=s.size();
22. }
23. for(i=1;i<=m;i++)
24. {
25. cin>>r;
26. cout<<s1[r]<<endl;
27. }
28. return 0;
29. }
30.