Problem:
Score : 100 points

Problem Statement

This contest, AtCoder Beginner Contest, is abbreviated as ABC.

When we refer to a specific round of ABC, a three-digit number is appended after ABC. For example, ABC680 is the 680th round of ABC.

What is the abbreviation for the N-th round of ABC? Write a program to output the answer.

Constraints

100 ≤ N ≤ 999

Input

Input is given from Standard Input in the following format:

N

Output

Print the abbreviation for the N-th round of ABC.

Sample Input 1

100

Sample Output 1

ABC100

The 100th round of ABC is ABC100.

Sample Input 2

425

Sample Output 2

ABC425

Sample Input 3

999

Sample Output 3

ABC999

Solution in Rust (1.15.1) (judge verdict: Accepted)

use std::error::Error;
use std::io;
use std::process;

fn main() {
    if let Err(_) = run() {
        process::exit(1);
    }
}

fn run() -> Result<(), Box<Error>> {
    let mut n = String::new();
    io::stdin().read_line(&mut n)?;
    println!("ABC{}", n);
    Ok(())
}