randRange( 1, 8 )*10
randRange ( 0, 9 )*1
randRange( 1, 8 )*10
randRange ( 0, 9 )*1
A_10+A_1
B_10+B_1
[]
graph.adder=new Adder(A,B),graph.adder.show(),DUMMY=Array(graph.adder.getNumHints())
A + B
graph.adder.showHint()