Description

Teacher Wang is teaching simple arithmetic. The meticulous Teacher Wang has collected $i$ mental calculation problems that students often get wrong and wants to compile them into a practice set. Laying out these problems is tedious, so he wants to use a computer program to improve efficiency. He hopes to minimize the input workload; for example, for the expression $\texttt{5+8}$, it is best to input only $\texttt{5}$ and $\texttt{8}$. The output should be as detailed as possible to facilitate later typesetting; for instance, after processing the above input, output $\texttt{5+8=13}$ and the total length of this expression, $6$. Teacher Wang assigns you this task. Please write a program to implement the above functionality.

Input Format

The first line contains an integer $i$.

The next $i$ lines each describe an expression. Each line may contain either three data items or two data items.

• If a line has three data items, then the first item is the operation type: $\texttt{a}$ means addition, $\texttt{b}$ means subtraction, and $\texttt{c}$ means multiplication. The next two items are the operands.
• If a line has two data items, then the operation type is the same as in the previous problem, and these two items are the operands.

Output Format

Output $2 \times i$ lines. For each input expression, output the complete expression with its result on the first line. On the second line, output the total length of that expression.

4
a 64 46
275 125
c 11 99
b 46 64

64+46=110
9
275+125=400
11
11*99=1089
10
46-64=-18
9

Hint

Constraints and Notes:

• For $50\%$ of the testdata, each input expression has three data items.
• For all testdata, $0 < i \leq 50$. The first expression always has three data items. Operands are non-negative integers less than $10000$.

Translated by ChatGPT 5