Score : $100$ points
Serval is fighting with a monster.
The health of the monster is $H$.
In one attack, Serval can decrease the monster's health by $A$. There is no other way to decrease the monster's health.
Serval wins when the monster's health becomes $0$ or below.
Find the number of attacks Serval needs to make before winning.
Input is given from Standard Input in the following format:
Print the number of attacks Serval needs to make before winning.
Thus, Serval needs to make three attacks to win.