How do I set up these line integrals?

First problem:

Line integral of y^3dx + x^2dy where C is the arc of the parabola x=1-y^2 from (0,-1) to (0,1).

Second problem:

Line integral of ydx + (x+y^2)dy where C is the ellipse 4x^2 + 9y^2 = 36, with counterclockwise rotation