a=float(input("Podaj liczbe liczbę uczniów a"))
b=float(input("Podaj liczbe liczbę uczniów b"))
c=float(input("Podaj liczbe liczbę uczniów c"))
print((a//2)+(a%2)+(b//2)+(b%2)+(c//2)+(c%2))
print('Program oblicza średnią z n liczb całkowitych')
print('Podaj ilość liczb n')
n=int(input())
if n>0:
suma=0
i=0
while i<n:
print("Wprowadź wartość")
x=int(input())
suma=suma+x
i=i+1
srednia=suma/n
print('Srednia z ',n,' liczb wynosi ',srednia)
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