Sum Skyscrapers

Rules:Place each digit from 1 to 6 into the grid such that every row/column contains all digits exactly once.Numbers outside indicate the sums of all skyscrapers visible in that direction.

Skyscrapers

Rules:Place a digit from 1 to 5 in each cell,so that each digit appears exactly once in every row and column.These digits behave like heights of buildings.Numbers outside indicate the number of buildings that are visible in that direction(shorter buildings are blocked by taller ones).Every row and column will have a blank cell.

Rising Skyscrapers

I do not like the title, but could not find a good title either.This test contains some nice puzzles.I like Signage,spiral ships and skyscrapers among those. This post contains two skyscraper puzzles,the first one is a new one(based on the IB at LMI) and the other one below it was based on a variation very similar to this one, except that the digits along grey lines need also to be consecutive. The test has smaller grids,so i guess they might be a little trickier and thus the difficulty might end up being the same as this larger one.
Rules:Fill the grid with digits from the given range,so that each digits appears exactly once in every row and column.Each digit represents a building, with the height of that digit itself.Clues outside the grid indicate the number of buildings that can be seen from the corresponding directions, considering that the taller buildings block the view of the shorter ones.The digits on the grey lines should be in increasing(decreasing) order, from one end to another.
For the second puzzle, the digits have to be consecutive and sorted.