uva 196 Spreadsheet

2024-03-24 07:48

文章标签 uva 196 spreadsheet

本文主要是介绍uva 196 Spreadsheet，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

原题：
In 1979, Dan Bricklin and Bob Frankston wrote VisiCalc, the first spreadsheet application. It be-
came a huge success and, at that time, was the killer application for the Apple II computers. Today,
spreadsheets are found on most desktop computers.
The idea behind spreadsheets is very simple, though powerful. A spreadsheet consists of a table
where each cell contains either a number or a formula. A formula can compute an expression that
depends on the values of other cells. Text and graphics can be added for presentation purposes.
You are to write a very simple spreadsheet application. Your program should accept several spread-
sheets. Each cell of the spreadsheet contains either a numeric value (integers only) or a formula, which
only support sums. After having computed the values of all formulas, your program should output the
resulting spreadsheet where all formulas have been replaced by their value.
Input
The first line of the input file contains the number of spreadsheets to follow. A spreadsheet starts with
a line consisting of two integer numbers, separated by a space, giving the number of columns and rows.
The following lines of the spreadsheet each contain a row. A row consists of the cells of that row,
separated by a single space.
A cell consists either of a numeric integer value or of a formula. A formula starts with an equal sign
(=). After that, one or more cell names follow, separated by plus signs (+). The value of such a formula
is the sum of all values found in the referenced cells. These cells may again contain a formula. There
are no spaces within a formula.
You may safely assume that there are no cyclic dependencies between cells. So each spreadsheet
can be fully computed.
The name of a cell consists of one to three letters for the column followed by a number between 1
and 999 (including) for the row. The letters for the column form the following series: A, B, C, …, Z,
AA, AB, AC, …, AZ, BA, …, BZ, CA, …, ZZ, AAA, AAB, …, AAZ, ABA, …, ABZ, ACA, …, ZZZ.
These letters correspond to the number from 1 to 18278. The top left cell has the name ‘A1’.
See Figure 1.

A1 B1 C1 D1 E1 F1 …
A2 B2 C2 D2 E2 F2 …
A3 B3 C3 D3 E3 F3 …
A4 B4 C4 D4 E4 F4 …
A5 B5 C5 D5 E5 F5 …
A6 B6 C6 D6 E6 F6 …
… … … … … … …
Figure 1: Naming of the top left cells

Output
The output of your program should have the same format as the input, except that the number of
spreadsheets and the number of columns and rows are not repeated. Furthermore, all formulas should
be replaced by their value.
Sample Input
1
4 3
10 34 37 =A1+B1+C1
40 17 34 =A2+B2+C2
=A1+A2 =B1+B2 =C1+C2 =D1+D2
Sample Output
10 34 37 81
40 17 34 91
50 51 71 172

中文：
给你一个表格，有的表格是数字，有的表格是表达式，如果某一个格当中是表达式，那么该单元的值由表达式决定。表示由表格中其他单元格中的值的和组成，现在让你计算出所有表格的值是多少。

attention!
数据中的列大小不会超过1000，与题目中的描述不符。
输入数据为先输入列，后输入行。

代码：

#include <bits/stdc++.h>using namespace std;
typedef pair<int,int> pii;int n,m,t;
string table[1005][2000];
int ans[1005][2000];int dfs(int x,int y)
{if(ans[x][y]!=INT_MAX)return ans[x][y];if(table[x][y][0]!='=')return ans[x][y]=stoi(table[x][y]);int r=0,c=0,res=0;for(int i=1;i<=table[x][y].size();i++)//i等于sheet[x][y].size会去执行dfs{if(isdigit(table[x][y][i]))r=r*10+table[x][y][i]-'0';else{if(isalpha(table[x][y][i]))c=c*26+table[x][y][i]-'A'+1;else{res+=dfs(r,c);r=c=0;}}}return ans[x][y]=res;
}int main()
{ios::sync_with_stdio(false);cin>>t;while(t--){cin>>m>>n;string s;memset(ans,0,sizeof(ans));for(int i=1;i<=n;i++){for(int j=1;j<=m;j++){cin>>table[i][j];ans[i][j]=INT_MAX;}}for(int i=1;i<=n;i++){for(int j=1;j<=m;j++)ans[i][j]=dfs(i,j);}for(int i=1;i<=n;i++){for(int j=1;j<=m;j++){if(j!=m)cout<<ans[i][j]<<" ";elsecout<<ans[i][j]<<endl;}}}return 0;
}