from machine import Pin
import utime

red=Pin(3,Pin.OUT)
blue=Pin(7,Pin.OUT)
yellow=Pin(28,Pin.OUT)
# Q1..
# red.toggle()
# utime.sleep(1)
# red.toggle()

# Q2.
# i=2
# while i>0:
#   red.value(1)
#   utime.sleep(i)
#   red.value(0)
#   i=i-0.5
#   utime.sleep(1)
# Q3.
# num = int(input())
# binary=""
# while num>0 :
#   if(num%2==0) :
#     binary=binary+'0'
#   else :
#     binary=binary+'1'
#   num=num//2
# for i in range (len(binary)-1,-1,-1) :
#   if binary[i]=='1':
#     blue.toggle()
#     utime.sleep(1)
#     blue.toggle()
#     utime.sleep(1)
#   else :
#     yellow.toggle()
#     utime.sleep(1)
#     yellow.toggle()
#     utime.sleep(1)
# red.toggle()
# utime.sleep(1)
# red.toggle()