{"raw_statement":[{"iden":"problem statement","content":"Takahashi the Jumbo will practice golf.\nHis objective is to get a carry distance that is a multiple of $K$, while he can only make a carry distance of between $A$ and $B$ (inclusive).\nIf he can achieve the objective, print `OK`; if he cannot, print `NG`."},{"iden":"constraints","content":"*   All values in input are integers.\n*   $1 \\leq A \\leq B \\leq 1000$\n*   $1 \\leq K \\leq 1000$"},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$K$\n$A$ $B$"},{"iden":"sample input 1","content":"7\n500 600"},{"iden":"sample output 1","content":"OK\n\nAmong the multiples of $7$, for example, $567$ lies between $500$ and $600$."},{"iden":"sample input 2","content":"4\n5 7"},{"iden":"sample output 2","content":"NG\n\nNo multiple of $4$ lies between $5$ and $7$."},{"iden":"sample input 3","content":"1\n11 11"},{"iden":"sample output 3","content":"OK"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}