char*p;main(n,s){for(;~scanf("%s%n%d ",s,&p,&n);puts(*p?printf(p>s?"%.*s.":"0.",p-s,s),p:s))for(p+=s;n--;*--p=p<s?48:p[!atoi(p)]);}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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