{"raw_statement":[{"iden":"problem statement","content":"You are given a string $S$ of length exactly $9$ consisting of digits. One but all digits from `0` to `9` appear exactly once in $S$.\nPrint the only digit missing in $S$."},{"iden":"constraints","content":"*   $S$ is a string of length $9$ consisting of digits.\n*   All characters in $S$ are distinct."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$S$"},{"iden":"sample input 1","content":"023456789"},{"iden":"sample output 1","content":"1\n\nThe string `023456789` only lacks $1$. Thus, $1$ should be printed."},{"iden":"sample input 2","content":"459230781"},{"iden":"sample output 2","content":"6\n\nThe string `459230781` only lacks $6$. Thus, $6$ should be printed.\nNote that the digits in the string may not appear in increasing order."}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}