print(0.1)
a = 0.1 + 0.1 + 0.1
print(a)



print(round(2.5))
print(round(1.5))
print(round(1.75, 1))
print(round(1.65, 1))
print(round(2.675, 2))



import math

print(math.ceil(1.2))
print(math.ceil(2))
print(math.ceil(-0.5))



print(math.floor(1.2))
print(math.floor(-0.5))



a = -1.225 * 100
print(a)
a += 0.5
print(a)
print(math.floor(a))