s=1 ; i=0 ; maximmom=0 ; minimmom=20
while s>= 15
grade=int(input('enter your number: '))
if grade > maximmom
mavimmom=grade
if grade < minimmom
minimmom=grade
i=i+grade
s=s+1
avr=i/15
print('max is:',maximmom,' min is:', minimmom,' max-min is:',maximmom-minimmom,' sum:',i,' avrage:',round(avr,2))