As the rule mentioned in the page http://www.codechef.com/COOK39 says “The top 75 Indian Students shall have their ACM-ICPC expenses reimbursed.” So my doubt is how to interpret this rule? Is it means that the students who rank among 75 in Indian category will only be eligible to expense reimbursement or top 75 students among the Indian students who are participating in ACM-ICPC. In the first case it would be max 75 students receiving reimbursement while in the later it is min 75 students assuming number of Indian ACM-ICPC participants also participating in cook off is greater than or equal to 75.
I guess top 75 Indian students => top 75 students in India, i.e. the former one in your question.