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Determine the last nonzero digit in value of expression
The input contains a single line with n and m separated by one or several spaces; n, m are natural numbers from 1 to 1000000, n ≥ m.
The output contains a single line with the last nonzero digit.
4 2
6
时间上限 | 内存上限 |
1000 | 65536 |