#AT1366. [ABC170B] Crane and Turtle
[ABC170B] Crane and Turtle
Score : points
Problem Statement
There are some animals in a garden. Each of them is a crane with two legs or a turtle with four legs.
Takahashi says: "there are animals in total in the garden, and they have legs in total." Determine whether there is a combination of numbers of cranes and turtles in which this statement is correct.
Constraints
- All values in input are integers.
Input
Input is given from Standard Input in the following format:
Output
If there is a combination of numbers of cranes and turtles in which the statement is correct, print Yes
; otherwise, print No
.
The statement "there are animals in total in the garden, and they have legs in total" is correct if there are two cranes and one turtle. Thus, there is a combination of numbers of cranes and turtles in which the statement is correct.
There is no combination of numbers of cranes and turtles in which this statement is correct.
We also consider the case in which there are only cranes or only turtles.