Independence Day

India's independency day is on the $15^{th}$ of August. You are given a date $X$ August, and must find how many days are left for the independence day. If the independence day has passed already, print $-1$ instead. ### Input - The first and only line of input contains a single integer $X$ - the date in August. ### Output Output the number of days left for independence day or $-1$ if it has alr