GATE Civil Engineering (CE) 2019 Shift 1 Solved Paper

A parabolic vertical curve is being designed to join a road of grade $+5\%$ with a road of grade $-3\%$. The length of the vertical curve is $400\mathit{m}$ measured along the horizontal. The vertical point of curvature (VPC) is located on the road of grade $+5\%$. The difference in height between VPC and vertical point of intersection (VPI) (in $\mathit{m}$, round off to the nearest integer) is ___________-