{"raw_statement":[{"iden":"problem statement","content":"> Takahashi is playing a game called Chess960. He has decided to write a code that determines if a random initial state satisfies the conditions of Chess960.\n\nYou are given a string $S$ of length eight. $S$ has exactly one `K` and `Q`, and exactly two `R`'s, `B`'s , and `N`'s. Determine if $S$ satisfies all of the following conditions.\n\n*   Suppose that the $x$\\-th and $y$\\-th $(x < y)$ characters from the left of $S$ are `B`; then, $x$ and $y$ have different parities.\n    \n*   `K` is between two `R`'s. More formally, suppose that the $x$\\-th and $y$\\-th $(x < y)$ characters from the left of $S$ are `R` and the $z$\\-th is `K`; then $x< z < y$."},{"iden":"constraints","content":"*   $S$ is a string of length $8$ that contains exactly one `K` and `Q`, and exactly two `R`'s, `B`'s , and `N`'s."},{"iden":"input","content":"The input is given from Standard Input in the following format:\n\n$S$"},{"iden":"sample input 1","content":"RNBQKBNR"},{"iden":"sample output 1","content":"Yes\n\nThe $3$\\-rd and $6$\\-th characters are `B`, and $3$ and $6$ have different parities. Also, `K` is between the two `R`'s. Thus, the conditions are fulfilled."},{"iden":"sample input 2","content":"KRRBBNNQ"},{"iden":"sample output 2","content":"No\n\n`K` is not between the two `R`'s."},{"iden":"sample input 3","content":"BRKRBQNN"},{"iden":"sample output 3","content":"No"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}