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Range (1120)
Instruction:
Some cells in the grid are marked with a cross; let X be the number of uncrossed cells in each row or column. Place a number into each empty cell so that in each row and column, each number from 1 to X appears exactly once in an uncrossed cell.
Some clues are given in the crossed cells; each clue is about the numbers that can be seen in that direction from the crossed cells before encountering another crossed cell or the edge of the grid. If there is only one number, then the clue is equal to that number; otherwise, the clue is the difference of the largest seen number and the smallest seen number.