Incorrect output

[pranavyatnalkar]

!bought[boughtIndex] was incorrect. This condition is checking if the item already assigned to the customer is sold. But since initially the customer is assigned the cheapest item, the condition may always remain false (in the case when cheapest item is sold in previous rounds of the auction). Hence, all the following customers never get assigned a new item (in fact all of them get the cheapest item).
We need to check whether the item we are about to sell to the customer is sold or not.
Correction: !bought[j]