1 #if 1 2 . right 3 4 # if 1 5 .. right 6 # elif 1 7 .. wrong 8 # elif 0 9 .. wrong 10 # else 11 .. wrong 12 # endif 13 14 #elif 1 15 . wrong 16 17 # if 1 18 .. wrong 19 # elif 1 20 .. wrong 21 # elif 0 22 .. wrong 23 # else 24 .. wrong 25 # endif 26 27 #elif 0 28 . wrong 29 30 # if 1 31 .. wrong 32 # elif 1 33 .. wrong 34 # elif 0 35 .. wrong 36 # else 37 .. wrong 38 # endif 39 40 #else 41 . wrong 42 43 # if 1 44 .. wrong 45 # elif 1 46 .. wrong 47 # elif 0 48 .. wrong 49 # else 50 .. wrong 51 # endif 52 53 #endif 54