Rating Improvement

Chef's current rating is $X$, and he wants to improve it. It is generally recommended that a person with rating $X$ should solve problems whose difficulty lies in the range $[X, X+200]$, i.e, problems whose difficulty is at least $X$ and at most $X+200$. You find out that Chef is currently solving problems with a difficulty of $Y$. Is Chef following the recommended practice or not? ### Input -