NC223808. RiseofShadows
描述
Azeroth is a world full of fantasy. In Azeroth, there are 
hours in a day and 
minutes in an hour.
You found a clock made from Azeroth. The clock has two hands --- the hour hand and the minute hand. The two hands point to the same direction at the start of a day. Either hand rotates at a constant speed. The hour hand goes around a full circle in hours and the minute hand goes around a full circle in minutes. Surprisingly, it is night in Azeroth if and only if the angle between the two hands is less than or equal to 
.
Now you're wondering, given
, how many integral moments (i.e., integer minutes since the start of the day) are there, such that the angle between the two hands is less than or equal to .
You found a clock made from Azeroth. The clock has two hands --- the hour hand and the minute hand. The two hands point to the same direction at the start of a day. Either hand rotates at a constant speed. The hour hand goes around a full circle in
Now you're wondering, given
输入描述
The only line of the input contains three integers
and
, representing the number of hours in a day and the number of minutes in an hour, and the limit of the angle in radians, respectively.
输出描述
Print an integer representing the answer.
示例1
输入:
5 5 4
输出:
9
示例2
输入:
3 5 1
输出:
3