{"raw_statement":[{"iden":"statement","content":"Programmers' kids solve this riddle in 5-10 minutes. How fast can you do it?"},{"iden":"input","content":"The input contains a single integer _n_ (0 ≤ _n_ ≤ 2000000000)."},{"iden":"output","content":"Output a single integer."},{"iden":"examples","content":"Input\n\n11\n\nOutput\n\n2\n\nInput\n\n14\n\nOutput\n\n0\n\nInput\n\n61441\n\nOutput\n\n2\n\nInput\n\n571576\n\nOutput\n\n10\n\nInput\n\n2128506\n\nOutput\n\n3"}],"translated_statement":[{"iden":"statement","content":"程序员的孩子们能在5-10分钟内解出这个谜题。你有多快？\n\n输入包含一个整数 #cf_span[n] (#cf_span[0 ≤ n ≤ 2000000000])。\n\n请输出一个整数。\n\n"},{"iden":"input","content":"输入包含一个整数 #cf_span[n] (#cf_span[0 ≤ n ≤ 2000000000])。"},{"iden":"output","content":"请输出一个整数。"},{"iden":"examples","content":"输入11输出2输入14输出0输入61441输出2输入571576输出10输入2128506输出3"}],"sample_group":[],"show_order":[],"formal_statement":"Given:  \n- An integer $ n $, where $ 0 \\leq n \\leq 2 \\times 10^9 $.\n\nObjective:  \n- Output a single integer $ f(n) $, where $ f $ is an unknown function defined by the riddle.\n\n(Note: The problem statement provides no explicit mathematical definition of $ f(n) $. The function must be inferred from the context of the riddle, which is not provided.)","simple_statement":null,"has_page_source":false}