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