Grid Path Description
There are 88418 paths in a 7 \times 7 grid from the upper-left square to the lower-left square. Each path corresponds to a 48-character description consisting of characters D (down), U (up), L (left) and R (right). For example, the path corresponds to the description DRURRRRRDDDLUULDDDLDRRURDDLLLLLURULURRUULDLLDDDD. You are given a description of a path which may also contain characters ? (any
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solution.cppC++17
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