1#if 0
2#elif(1)
3success
4#endif
5
6#if 0
7#elif+1
8success
9#endif
10
11#if 0
12#elif-1
13success
14#endif
15
16#if 0
17#elif!1
18success
19#endif
20
21#if 0
22#elif~1
23success
24#endif
25