
Score : 100 points
Problem StatementServal 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.
Constraints
1 \leq H \leq 10^4
1 \leq A \leq 10^4
All values in input are integers.
InputInput is given from Standard Input in the following format:
H A
OutputPrint the number of attacks Serval needs to make before winning.
Sample Input 110 4
Sample Output 13
After one attack, the monster's health will be 6.
After two attacks, the monster's health will be 2.
After three attacks, the monster's health will be -2.
Thus, Serval needs to make three attacks to win.
Sample Input 21 10000
Sample Output 21
Sample Input 310000 1
Sample Output 310000
