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Last digit

Description

Determine the last nonzero digit in value of expression

.
Input

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.

Output

The output contains a single line with the last nonzero digit.

Sample Input

4 2
Sample Output

6

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  • threenewbee 2017-08-20 15:49
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    http://blog.csdn.net/jaihk662/article/details/77387773

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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