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Minimize the absolute difference of the sum of two dijoint sets in which terms are in the powers of $p$.

Given $n(n>=1)$ integers $k_1,k_2 \cdots k_n(k_i>=0)$, and an integer $p>=1$, Johny picks $p^{k_i}$ from $i-th$ category for each category , and he wants to divide them into two disjoint sets,...
user69608's user avatar
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2 answers
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Arranging numbers in an array (Swedish Math Olympiad 1986)

Consider an $m\times n$ array of real numbers. Let $d>0$. Suppose that the difference between the maximum number and the minimum number in each row is at most $d$. We then sort the numbers in ...
moray eel's user avatar
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