ABSYS - Anti-Blot System

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Jimmy is a hard-working pupil in his second year at primary school. Recently he decided to convert all his notes into an electronic version. Sadly, he found that his math notes were full of ink blots.

He scanned the notes and sent them through his own OCR package (yes, he coded it all by himself at the age of 8). The OCR package replaced all ink blots by the string "machula".

Problem specification

You are given Jimmy's notes, processed by the OCR. They contain simple math exercises, which were used to practice addition on positive integers. Your task is to recover the damaged part of the notes.

Input specification

The first line of the input file contains an integer T specifying the number of test cases. Each test case is preceded by a blank line.

Each test case consists of exactly one line. The line represents an equation of the form "number + number = number", where each number is a positive integer. One part of the equation will be replaced by the string "machula". The string always covers a contiguous non-empty sequence of digits, possibly even an entire number. You may assume that for each equation in the input there will be exactly one way to fill in the missing digits.

Output specification

For each test case, the output shall contain one line of the form "number + number = number". The line must represent the equation from that test case with all missing digits filled in.



23 + 47 = machula

3247 + 5machula2 = 3749

machula13 + 75425 = 77038
23 + 47 = 70
3247 + 502 = 3749
1613 + 75425 = 77038

Note: int in C++/C/Java or longint in Pascal is enough.

hide comments
pasari: 2019-01-30 16:55:45

How to check for a blank line in java?
Does blank line mean all whitespaces?

suyashsingh234: 2018-12-10 16:23:24

newline is an input. Be careful its not to be put yourself.

artistic_15: 2018-10-25 21:22:00

AC in 2nd go.
Very easy implementation in python.
Just be careful with the new line after each input where i made my mistake.

Tip: if input:

Last edit: 2018-10-25 21:22:37
roopammishra: 2018-10-13 00:48:24

Yupp!! Ac in one go..

phoemur: 2018-09-07 21:34:54

C++ using std::string, std::stoi, std::getline, std::to_string and even stringstreams works and all get AC...

If you get TLE blame your logic, not the language...

suchismitadhal: 2018-09-03 17:55:24

make your own character array to integer function, if getting TLE in C++

harry_shit: 2018-08-30 14:18:10

my code works perfectly everywhere at codechef ide,ideone,codeblocks, it is really frustrating spoj is giving everytime a WA.

rochan: 2018-08-16 15:48:47

Very easy program in Python3.
If you want a hint, read on..... ELSE LEAVE :)

1) For input, use if input() != "\n"
2) Extract each line whole as a string and pass it to a function
2) In the function, make note of the plus_index and equals_index
3) Use substrings to extract 3 strings from the indices you found out,
4) Check each strings. Use __contains__()
5) Use basic maths. If x + y = z, then x = z - y

Last edit: 2018-08-16 15:49:38
madhugupta7979: 2018-08-06 13:20:21

My 50th :)

anmol178601: 2018-07-12 12:10:09

use strstr() and atoi() in c++, easy one.

Added by:Fudan University Problem Setters
Time limit:1s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: C99 ERL JS-RHINO
Resource:IPSC 2007