{"raw_statement":[{"iden":"problem statement","content":"We have five variables $x_1, x_2, x_3, x_4,$ and $x_5$.\nThe variable $x_i$ was initially assigned a value of $i$.\nSnuke chose one of these variables and assigned it $0$.\nYou are given the values of the five variables after this assignment.\nFind out which variable Snuke assigned $0$."},{"iden":"constraints","content":"*   The values of $x_1, x_2, x_3, x_4,$ and $x_5$ given as input are a possible outcome of the assignment by Snuke."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$x_1$ $x_2$ $x_3$ $x_4$ $x_5$"},{"iden":"sample input 1","content":"0 2 3 4 5"},{"iden":"sample output 1","content":"1\n\nIn this case, Snuke assigned $0$ to $x_1$, so we should print $1$."},{"iden":"sample input 2","content":"1 2 0 4 5"},{"iden":"sample output 2","content":"3"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}