Number Logic Puzzle 1701

Type: Skyscraper, Sum
Size: 4
Points: 16, Penalty:0, Time : Initializing..  
01
23
4

Rules:

The goal is to fill in each cell with numbers from 1 to N, where N is the size of the puzzle's side.

Each column and each row contain the numbers only once.

The numbers along the edge of the puzzle indicate the sum of heights of the visible buildings.