char c[99];d[99],i,j;main(){while(gets(c)>0){for(i=0;c[i];i++)for(j=0;c[j];j++)if(i-j&&c[i]==c[j])d[i]=j;for(i=0;c[i];i=d[i]+1)putchar(c[i]);puts("");}}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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