Strings in Strings by ludo

for(i in strsplit(readLines("stdin")," ")){r=T;k=0;for(j in i[-1])if(!grepl(i[k<-k+1],j))r=F;cat(if(r)"YES\n"else"NO\n")}

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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