Problem 2195. Sum of the pixel values for the blue color

@goc3 please check if the test is incorrect as @Rafael mentions.

@Dyuman Joshi: the test suite and description have been updated with the value provided by Rafael S.T. Vieira. At some point in time the image was changed, as the early solutions did not require any hard coding.

Thank you @goc3, appreciate your effort in helping the community!