[PSH STR "0001"]
[PSH INT 0]
[INP INT]
[JMP F 4 IF 0]
[POP][ADD 2]
[JMP F 2][POP]
[INP INT]
[JMP F 4 IF 0]
[POP][ADD 1]
[JMP F 2][POP]
[JMP F 5 IF 0]
[SUB 1][SWP]
[POP][JMP B 4]
[POP][PRT][END]
