Reverse a Number

Write the decimal digits of n in reverse order and return the resulting number. Zeros that end up at the front disappear, so 1200 becomes 21.

Implement reverse_number(n).

Input

n: A positive integer.

Output

Return the reversed number.

सीमाएँ

1 ≤ n ≤ 10¹⁸. The reversed value always fits a signed 64-bit integer.

उदाहरण

इनपुट:
n = 352

अपेक्षित आउटपुट:
expected = 253

इनपुट:
long long n = 352;

अपेक्षित आउटपुट:
long long expected = 253;

इनपुट:
long n = 352;

अपेक्षित आउटपुट:
long expected = 253;

इनपुट:
n = 1200

अपेक्षित आउटपुट:
expected = 21

इनपुट:
long long n = 1200;

अपेक्षित आउटपुट:
long long expected = 21;

इनपुट:
long n = 1200;

अपेक्षित आउटपुट:
long expected = 21;