char*s;f(p,q,r){return*s-'i'?s+=6-(p=*s>'f'),p:(p=f(s+=3),q=f(s+=5),r=f(s+=5),p?q:r);}main(t){for(;gets(s=&t);)puts(f()?"true":"false");}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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