Description

Given a set of strings, perform the operations according to the following commands.

 

Commands: (n will not be equal to m)

s n m:

Swap the n^th string and the m^th string.

i n m:

Insert the m^th string at the tail of the n^th string.

si n m:

Swap the specified strings first, and then insert.

is n m:

Insert first, and then swap the two specified strings.

t n m:

If the n^th string is equal to the m^th string, do i n m. Otherwise, do s n m.

e:

Exit.

 

Note:

You will be provided with main.cpp and function.h, and asked to implement function.cpp including

Str::Str(char*);

Str::Str(const Str &);

bool Str::operator==( const Str &) const;

 

 

Input

The first line is an integer N indicating the number of input strings.

The following N lines each contains one input string.

Starting from the N+2^th line will be a sequence of commands.

Output

Output the final result of the input strings.

Sample Input  Download

Sample Output  Download

Partial Judge Code

11431.cpp

Partial Judge Header

11431.h

Tags

Discuss

Description

**[2018/5/12 02:12 PM] : Sorry for the confusion (get_row, get_col) in the original code! The partial code provided has been improved for clarity and all submissions to this problem has been rejudged! For new submissions, please check out the new partial code! Sincerely apologize for the inconvenience caused!**

---

There are few Matrix stored in MatrixChain Class , please implement the calc function to get chain multiplication of them.

Your task is to implement the following three functions:

Matrix Matrix::operator*(const Matrix &a) const
Matrix Matrix::operator=(const Matrix &a)
Matrix MatrixChain::calc(int l, int r) const

Definition of Chain Multiplication: Given l, r and an array arr of matrices, calculate the result matrix of arr[l] * arr[l+1] * ... * arr[r-1]

Hint : Σ(A[r][k] * B[k][c]) = C[r][c], where C is a matrix with r rows and c columns.

 

Input

Input will be done by main.cpp so don't worried about it

int T means T matrices

for T : 0 < T < 11

then T matrices with row , col , and each of elements value

for row , col: 0 < row  , col < 11

for value of Matrix elements: 0 < value < 11

Finally, give l, r  to get the calc() function's answer.

Output

output will also be done by main.cpp so don't worried about it

it will output the calc function's answer .

 

Sample Input  Download

Sample Output  Download

Partial Judge Code

11920.cpp

Partial Judge Header

11920.h

Tags

Discuss