a,b,c=io.read("*n","*n","*n")
if(a < b and c < b and a ~= c) then print("INF")
elseif(a > b and c > b and a ~= c) then print("INF")
elseif(a == b or b == c or c == a) then print(0)
else
    cnt = 0
    m = math.max(math.max(a,b),c)
    for i = 1, m do
        as, bs, cs = a % i, b % i, c % i
        if(as > bs and cs > bs and as ~= cs) then cnt = cnt + 1
        elseif(as < bs and cs < bs and as ~= cs) then cnt = cnt + 1
        end
    end
    print(cnt)
end