## Welcome To SDIBT ACM-ICPC Online Judge

Problem 1046. -- Primary Arithmetic ## Primary Arithmetic

Time Limit: 1 Sec Memory Limit: 64 MB

Submit: 44 Solved: 12

[Submit][Status][Discuss]## Description

Children are taught to add multi-digit numbers from right to left, one digit at a time. Many find the ``carry" operation, where a 1 is carried from one digit position to the next, to be a significant challenge. Your job is to count the number of carry operations for each of a set of addition problems so that educators may assess their difficulty.

## Input

Each line of input contains two unsigned integers less than 10 digits. The last line of input contains ``0 0''.

## Output

For each line of input except the last, compute the number of carry operations that result from adding the two numbers and print them in the format shown below.

## Sample Input

123 456
555 555
123 594
0 0

## Sample Output

No carry operation.
3 carry operations.
1 carry operation.

## HINT

## Source

Waterloo local 2000.09.23

[Submit][Status][Discuss]

HOME
Back

한국어 中文 English

All Copyright Reserved 2008-2010 SDIBT TEAM

GPL2.0 2003-2010 HUSTOJ Project TEAM

Anything about the Problems, Please Contact Admin:admin