Codeforces 1213B. Bad Prices Solution

Solve in C:

1. ///**********ALLAH IS ALMIGHTY************///
2. ///AH Tonmoy
3. ///Department of CSE
4. ///Islamic University,Bangladesh
5. #include<iostream>
6. using namespace std;
7. int main(){
8. long long int i,ar[150009]={0},t,v,n;
9. cin>>t;
10. while(t--)
11. {
12. int r=0;
13. cin>>n;
14. for(i=0;i<n;i++)
15. {
16. cin>>ar[i];
17. }
18. v=ar[n-1];
19. for(i=n-1;i>=0;i--)
20. {
21. if(v<ar[i])
22. r++;
23. else
24. v=ar[i];
25. }
26. cout<<r<<endl;
27. } 
28.  
29. }