#define x(P,Q) if(*A==P){Q;printf("%d\n",b);}\x0d main(){char a[99],*A=&a,b=0;scanf("%s",a);for(;*A!='q';A++){x(43,b++)x(94,b*=b)x(47,b/=2)x(113,break)}}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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