Capital gains calculation

1. land was purchased in April 2012 for 4,15,000/- 2. house was constructed during FY 2012-13 to FY 15-16. construction cost - 12-13 -19,00,896 13-14 - 3,74,215 14-15 - 5,89,127 15-16 - 13,28,336 construction cost is shown in IT returns. 3. Finally it was sold in Mar 2016 for 50lacs I want to know how capital gains is calculated. whether long term/short term or partly long term and partly short term. Thank u