x*****0
发帖数: 452 | 1 A spreadsheet consists of a two-dimensional array of cells, labeled A1, A2,
etc. Rows are identified using letters, columns by numbers. Each cell
contains either an integer (its value) or an expression. Expressions contain
integers, cell references, and other operators '+', '-', '*', '/' with the
usual rules of evaluation -- note that the input is RPN and should be
evaluated in stack order.
The spreadsheet input is defined as follows:
(a) Line 1: two integers, defining the width and height of the spreadsheet (
n, m)
(b) n*m lines each containing an expression which is the value of the
corresponding cell (cells enumerated in the order A1, A2, A, B1, ...)
For example:
Input
3 2
A2
4 5 *
A1
A1 B2 / 2 +
3
39 B1 B2 * /
Output
3 2
20.0
20.0
20.0
8.7
3.0
1.5
The above example input visually looks like:
|1 |2 |3 |
--------------------------------------------------
A |A2 |4 5 * |A1 |
--------------------------------------------------
B |A1 B2 / 2 + |3 |39 B1 B2 * / |
-------------------------------------------------- | s***c
发帖数: 639 | | l******s
发帖数: 3045 | 3 Input不能理解，为什么下面的不是B3然后39 B1 B2 * /作为输入值？
3
39 B1 B2 * / | x*****0
发帖数: 452 | 4 Input
3 2
A2
4 5 *
A1
A1 B2 / 2 +
3
39 B1 B2 * /
3 => 表示 B2 这个地方 放的是 3
39 B1 B2 * / => B3 这个地方 放的是 39 B1 B2 * /
最开始的输入
3 2 ==》 表示一个3x2的矩阵：X
X[A][1], X[A][2], X[A][3]
X[B][1], X[B][2], X[B][3]
希望对你理解题意有帮组。
【在 l******s 的大作中提到】
: Input不能理解，为什么下面的不是B3然后39 B1 B2 * /作为输入值？
: 3
: 39 B1 B2 * /
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