char*p,*q,*r,s[99];main(){for(;~scanf("%s%s",p=s,q=s+50);putchar('\n'))for(;*p+*q;putchar(*q++))strcmp(p,q)>0&&(r=p,p=q,q=r);}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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