HBC236493多元组,动态规划Sequinary Numerals题解

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A sequinary numeral is a sequence of digits: dndn1d1d0d_n d_{n-1}cdots d_1 d_0dndn1d1d0 where dnd_ndnis 111or 222 and the others are 0,10,10,1, or 222. It represents the rational number:d0+d1(3/2)+d2(3/2)2+...+dn(3/2)nd_0 + d1 * + d_2 *^ 2 + ... + d_n*^ nd0+d1(3/2)+d2(3/2)2+...+dn(3/2)n Write a program which takes a sequinary numeral as input and returns the number it represents as a proper fraction.

A sequinary numeral is a sequence of digits:  dndn−1⋯d1d0d_n d_{n-1}cdots d_1 d_0dn​dn−1​⋯d1​d0​  where dnd_ndn​ is 111 or 222 and the others are 0,10,10,1, or 222.  It represents the rational number: d0+d1∗(3/2)+d2∗(3/2)2+...+dn∗(3/2)nd_0 + d1 *( 3/2) + d_2 *( 3/2)^ 2 + ... + d_n*( 3/2)^ nd0​+d1∗(3/2)+d2​∗(3/2)2+...+dn​∗(3/2)n Write a program which takes a sequinary numeral as input and returns the number it represents as a proper fraction.

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标签： HBC236493多元组 动态规划Sequinary Numerals题解