{"raw_statement":[{"iden":"statement","content":"已知 $f(x,n)=\\sqrt{n+\\sqrt{(n-1)+\\sqrt{(n-2)+\\sqrt{...+2+\\sqrt{1+x}}}}}$。\n\n计算 $f(x,n)$ 的值。"},{"iden":"input","content":"输入 $x$ 和 $n$。"},{"iden":"output","content":"函数值，保留两位小数。"},{"iden":"note","content":"#### 数据范围\n\n对于 $100\\%$ 的数据，$1 \\le x,n \\le 10$。"}],"translated_statement":null,"sample_group":[["4.2 10","3.68"]],"show_order":[],"formal_statement":null,"simple_statement":null,"has_page_source":false}