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[Phone Screen] Minimum Tires For A Race
Hard
You are given a 0-indexed 2D integer array tires where tires[i] = [f_i, r_i] indicates that the ith tire finishes its xth successive lap in f_i * r_i^(x-1) seconds.
For example, if f_i = 3 and r_i = 2, the tire finishes its 1st lap in 3 seconds, its 2nd lap in 32=6 seconds, its 3rd lap in 34=12 seconds, etc.
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Asked at:Google
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