x[100][10];i;j;main(k){for(;i<100;i==j|memcmp(x+i,x+j,k)?++j:++k)*x[j]||gets(x+j)||(k=j=!printf("%.*s\n",k,x+i++));}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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