from fractions import Fraction
for a in range(2,5):
for b in range(a,14):
c = 1 / (Fraction(5,7) - Fraction(1,a) - Fraction(1,b))
if c.numerator > 0 and c.denominator == 1:
print(a,b,c)
ZnJvbSBmcmFjdGlvbnMgaW1wb3J0IEZyYWN0aW9uCgpmb3IgYSBpbiByYW5nZSgyLDUpOgogICAgZm9yIGIgaW4gcmFuZ2UoYSwxNCk6CiAgICAgICAgYyA9IDEgLyAoRnJhY3Rpb24oNSw3KSAtIEZyYWN0aW9uKDEsYSkgLSBGcmFjdGlvbigxLGIpKQogICAgICAgIGlmIGMubnVtZXJhdG9yID4gMCBhbmQgYy5kZW5vbWluYXRvciA9PSAxOgogICAgICAgICAgICBwcmludChhLGIsYyk=