{"raw_statement":[{"iden":"problem statement","content":"Takahashi is in a building with $100$ floors.\nHe uses the stairs for moving up two floors or less or moving down three floors or less, and uses the elevator otherwise.\nDoes he use the stairs to move from floor $X$ to floor $Y$?"},{"iden":"constraints","content":"*   $1 \\leq X,Y \\leq 100$\n*   $X \\neq Y$\n*   All input values are integers."},{"iden":"input","content":"The input is given from Standard Input in the following format:\n\n$X$ $Y$"},{"iden":"sample input 1","content":"1 4"},{"iden":"sample output 1","content":"No\n\nThe move from floor $1$ to floor $4$ involves going up three floors, so Takahashi uses the elevator."},{"iden":"sample input 2","content":"99 96"},{"iden":"sample output 2","content":"Yes\n\nThe move from floor $99$ to floor $96$ involves going down three floors, so Takahashi uses the stairs."},{"iden":"sample input 3","content":"100 1"},{"iden":"sample output 3","content":"No"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}