Reversed Addition

Interview

Time limit2sMemory limit128 MB

Summary

Reverse the digits of two numbers up to 1000, add the reversed values, then reverse the sum and print the result.

Level: Easy2 of 10
Topics: Math, Implementation
Solved: No attempts yet

Problem

For a positive integer X, define Rev(X) as the integer obtained by reading the decimal digits of X in reverse order. Any leading zeroes created by the reversal are discarded. For instance, Rev(123) is 321, and Rev(100) is 1.

Given two positive integers X and Y, compute Rev(Rev(X) + Rev(Y)).

Input

The first line contains two integers X and Y. Both X and Y are natural numbers no greater than 1,000.

Output

Print the answer on the first line.

Examples5

Example 1
Input
```
123 100
```
Expected output
```
223
```
Example 2
Input
```
111 111
```
Expected output
```
222
```
Example 3
Input
```
5 5
```
Expected output
```
1
```
Example 4
Input
```
1000 1
```
Expected output
```
2
```
Example 5
Input
```
456 789
```
Expected output
```
1461
```