print ("")
print (round(5.6789, 2))
print (round(3.14159, 1))
print(round (4.7))
print (round(2.3))
print(round(-2.456,1))

print ("")
import math
print(math.floor(6.8))
print (math.floor(3.1))

print("")
import math
print(math.ceil(6.2))
print (math.ceil(3.1))

print("")
import math 
print(math.trunc(8.9))
print(math.trunc(5.1))
print(math.trunc(-3.7))

print("")
import math
print(math.trunc(6.7))