
ZOJ Problem Set  2818
Given positive integers B and N, find an integer A such that A^{N} is as close as possible to B. (The result A is an approximation to the Nth root of B.) Note that A^{N} may be less than, equal to, or greater than B. Input: The input consists of one or more pairs of values for B and N. Each pair appears on a single line, delimited by a single space. A line specifying the value zero for both B and N marks the end of the input. The value of B will be in the range 1 to 1,000,000 (inclusive), and the value of N will be in the range 1 to 9 (inclusive). Output: For each pair B and N in the input, output A as defined above on a line by itself.
Source: MidCentral USA 2006 