char*p;main(n,s){for(;~scanf("%s%n%d ",s,&p,&n);printf("%.*s%s%s\n",p-s?:1,p>s?s:"0","."+!*p,p))for(p+=s;n--;*p=--p<s?48:p[!p[*p<49]]);}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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