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Times Out (1286)
Instruction:
Place a number from 1 to X into each cell so that each number appears exactly once in each row and column. (X is the number of cells in each row.) Also, draw a single, non- intersecting loop that only consists of line segments between the dots along the dashed lines.
Numbers outside the grid (when given) represent all contiguous groups of numbers along that row or column, in positional order. These groups are separated by cell edges that are part of the loop. A group inside the loop is represented by the sum of its numbers; a group outside the loop is represented by the product of its numbers. (A group with a single number is represented by the number itself.) Some digits may be replaced by a question mark (?); no number starts with the digit 0 (so, for example, '??' represents a number in the range 10 to 99).