Physics Work,Power & Energy Level: Misc Level

A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill,as the drawing illustrates. The crest of the second hill is circular, with a radius of 33.4 m. Neglect friction and air resistance. What must be the height h of the first hill so that the skier just loses contact with the snow at the crest of the second hill?