Help me in solving BMCP08A problem

My issue

ceil and floor functions are not working

My code

# cook your dish here
a=10
b=2

print(abs(a-b))
print(a%b)
print(ceil(9.7))
print(floor(2.3))
print(pow(a,b))

Learning course: Algorithmic Problem Solving
Problem Link: https://www.codechef.com/learn/course/klu-problem-solving/KLUPS07/problems/BMCP08A