a,b,c=map(int,input().split())
x=max
M,B=x(a,b,c),lambda y:[a%y,b%y,c%y]
z=[(0,(1,-1)[p>M])[(B(p)[1]==x(B(p))or B(p)[1]==min(B(p)))*(len(set(B(p)))>2)]for p in range(1,M+9)]
print((sum(z),'INF')[-1 in z])