push a push 1 use wusi(1) use =(2) push b push 2 use wusi(1) use =(2) push 1 use wusi(1) push 2 use wusi(1) use ==(2) use print(1) push a push b use ==(2) use print(1) wusi(24) push c#L push 1 use +=(2) push c#L return(1) return(0)