#​ Write a Python program to sum from a to b. #​ Input a value:
#​ 5
#​ Input b value:
#​ 20
#​ The sum of 5 to 20 is_


a = 10
b = 20
start = a
end = b
sum = 0
while start <= end:
  sum = sum + start
  start = start + 1
print("The sum of",a," to",b,"is",sum)