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