'''
ax + by + c =0
'''
a = 1
b = 0
c = 1
a
x =( (a == 0) and [
                   (c == 0 and ['duzo'] or ['nie ma'])[0]
              ] or [ -c/float(a) ]
    )[0]

print x

wynik = ""
if a ==0:
    if c == 0:
        wynik = 'duzo'
    else:
        wynik = 'nie ma'
else:
    wynik = -c/float(a)

print wynik
