Apricot Pineapple Pie

• 240 ml juice from apricots
• 120 gr crisp rice cereal (crushed)
• 50 gr sugar
• 40 gr margarine
• 28 gr quick cooking tapioca
• 14 gr sugar
• 10 ml lemon juice
• 1 gr cinnamon (ground)
• 1 package pineapple (crushed)