Problem Statement
Write a program that determines a loan approval decision based on an applicant's monthly salary, years of service, and late payment history.
Loan Approval Rules
APPROVED: If the monthly salary is at least $600, the applicant has at least 2 years of service, and the applicant has no late payments.
REVIEW: If the monthly salary is at least $600, but the applicant has at least one late payment or has fewer than 2 years of service.
REJECTED: If the monthly salary is less than $600, regardless of years of service or late payment history.