speed-grid/addition-5x5/expert · 套题 3
2 problems
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1
4×4 addition speed grid. Row: [4, 2, 5, 8] × Col: [6, 5, 9, 7]
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2
4×4 addition speed grid. Row: [10, 1, 9, 7] × Col: [2, 5, 4, 3]
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