#A. Hello world!

    Type: Default 1000ms 256MiB

Hello world!

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Background

Special for beginners, ^_^

Description

Print "Hello world!".

Format

Input

No input.

Output

One line."Hello world!"

Samples

No input
Hello world!

Limitation

#include <iostream>

int main()
{
    std::cout << "Hello world!\n";
    return 0;
}

Hello world

Not Attended
Status
Done
Rule
IOI
Problem
5
Start at
2022-12-2 18:00
End at
2023-1-1 0:00
Duration
702 hour(s)
Host
Partic.
4