def UCLN(a, b):

if b == 0

return a

return UCLN(b, a % b)

a = int(input())

b = int(input())

print(UCLN(a, b))

a = float(input( ))

while a <= 0:

print(" so vua nhap chua phai so thuc duong. Hay nhap lai.")

a = float(input())

print(f"(a**2:.)")

chu+o+ng tri`nh lo^i cu' phap

ma~ lo^~i syntaxerror

li' do gapwj lo^~i: ca^u le^.nh if sai cu' pha'p cu. the^? thie^'u da^'u hai cha^'m cuo^'i ca^u

ca'ch kha('c phu.c the^m dau hai cha^'m va`o cuo^i le^.nh if