{"raw_statement":[{"iden":"problem statement","content":"You drew lottery $N$ times. In the $i$\\-th draw, you got an item of the kind represented by a string $S_i$.\nHow many kinds of items did you get?"},{"iden":"constraints","content":"*   $1 \\leq N \\leq 2\\times 10^5$\n*   $S_i$ consists of lowercase English letters and has a length between $1$ and $10$ (inclusive)."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$N$\n$S_1$\n$:$\n$S_N$"},{"iden":"sample input 1","content":"3\napple\norange\napple"},{"iden":"sample output 1","content":"2\n\nYou got two kinds of items: `apple` and `orange`."},{"iden":"sample input 2","content":"5\ngrape\ngrape\ngrape\ngrape\ngrape"},{"iden":"sample output 2","content":"1"},{"iden":"sample input 3","content":"4\naaaa\na\naaa\naa"},{"iden":"sample output 3","content":"4"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}