The position coordinate after the first step is x- 1.
The position coordinate after the second step is x+ 1.
The position coordinate after the third step is x-2.
The position coordinate after the fourth step is x+2.
……
The coordinate position after step 100 is x+50.
X+50= 19.94。
So c=-30.06
So the initial position K0 of the electronic flea is -30.06.