{"raw_statement":[{"iden":"problem statement","content":"Takahashi, Aoki and Snuke love cookies. They have $A$, $B$ and $C$ cookies, respectively. Now, they will exchange those cookies by repeating the action below:\n\n*   Each person simultaneously divides his cookies in half and gives one half to each of the other two persons.\n\nThis action will be repeated until there is a person with odd number of cookies in hand.\nHow many times will they repeat this action? Note that the answer may not be finite."},{"iden":"constraints","content":"*   $1 ≤ A,B,C ≤ 10^9$"},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$A$ $B$ $C$"},{"iden":"sample input 1","content":"4 12 20"},{"iden":"sample output 1","content":"3\n\nInitially, Takahashi, Aoki and Snuke have $4$, $12$ and $20$ cookies. Then,\n\n*   After the first action, they have $16$, $12$ and $8$.\n*   After the second action, they have $10$, $12$ and $14$.\n*   After the third action, they have $13$, $12$ and $11$.\n\nNow, Takahashi and Snuke have odd number of cookies, and therefore the answer is $3$."},{"iden":"sample input 2","content":"14 14 14"},{"iden":"sample output 2","content":"\\-1"},{"iden":"sample input 3","content":"454 414 444"},{"iden":"sample output 3","content":"1"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}