As per the Income Tax Act,
If any person goes out of India for employment purposes,
An individual will be treated as a Resident in India in any previous year if he/she is in India for at least 182 days in that year.
An individual who does not satisfy the condition will be treated as “non-resident” in that previous year.
Since your stay in India is less than 182 days, you will be an NRI for the FY 2017-18.
However, you shall be liable to file the Income Tax Returns for FY 2017-18.