1 6 2 IF 3 ELSE 4 END_IF 5 ENDPROGRAM 6 IF 7 S 8 ELSE 9 END_IF 10 IF 11 ELSE 12 S 13 END_IF 14 ENDPROGRAM 15 IF 16 S 17 ELSE 18 END_IF 19 IF 20 ELSE 21 S 22 END_IF 23 IF 24 ELSE 25 S 26 END_IF 27 ENDPROGRAM 28 S 29 S 30 S 31 ENDPROGRAM 32 S 33 IF 34 S 35 S 36 ELSE 37 IF 38 IF 39 S 40 ELSE 41 S 42 END_IF 43 S 44 ELSE 45 S 46 END_IF 47 END_IF 48 S 49 ENDPROGRAM 50 IF 51 IF 52 ELSE 53 END_IF 54 ELSE 55 END_IF 56 ENDPROGRAM 57