Hello World!

Problem Description

Print one line: hello world!.

Input Format

This problem has no input.

Output Format

Print one line containing hello world!.

Sample Input

Sample Output

hello world!

Constraints

None.

Hint

This is your first problem on the OJ, so get one thing straight: the judge compares your output with the expected answer character by character — one extra space or one missing exclamation mark counts as wrong.

• There is no input here; just print hello world! with cout.
• The minimal skeleton of a C++ program (#include, the main function, return 0) was written once in class — reproduce it from memory; that itself is the exercise.
• Before submitting, check your spelling character by character against the statement.