作业10

rmin=eval(input())
number=eval(input())
color=input()
import turtle as t
t.pencolor(color)
t.pensize(4)
for i in range (number):
    t.circle(rmin)
    rmin=rmin+20
    t.penup()
    t.seth(-90)
    t.fd(20)
    t.seth(0)
    t.pendown()
t.hideturtle()
t.done()