Problem:
Score : 100 points

Problem Statement

You will be given an integer a and a string s consisting of lowercase English letters as input.

Write a program that prints s if a is not less than 3200 and prints red if a is less than 3200.

Constraints

2800 \leq a < 5000

s is a string of length between 1 and 10 (inclusive).

Each character of s is a lowercase English letter.

Input

Input is given from Standard Input in the following format:

a
s

Output

If a is not less than 3200, print s; if a is less than 3200, print red.

Sample Input 1

3200
pink

Sample Output 1

pink

a = 3200 is not less than 3200, so we print s = pink.

Sample Input 2

3199
pink

Sample Output 2

red

a = 3199 is less than 3200, so we print red.

Sample Input 3

4049
red

Sample Output 3

red

a = 4049 is not less than 3200, so we print s = red.

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

#[allow(unused_macros)]
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        let mut next = || { iter.next().unwrap() };
        input_inner!{next, $($r)*}
    };
    ($($r:tt)*) => {
        let stdin = std::io::stdin();
        let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
        let mut next = move || -> String{
            bytes
                .by_ref()
                .map(|r|r.unwrap() as char)
                .skip_while(|c|c.is_whitespace())
                .take_while(|c|!c.is_whitespace())
                .collect()
        };
        input_inner!{next, $($r)*}
    };
}

#[allow(unused_macros)]
macro_rules! input_inner {
    ($next:expr) => {};
    ($next:expr, ) => {};

    ($next:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };

    ($next:expr, mut $var:ident : $t:tt $($r:tt)*) => {
        let mut $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };
}

#[allow(unused_macros)]
macro_rules! read_value {
    ($next:expr, ( $($t:tt),* )) => {
        ( $(read_value!($next, $t)),* )
    };

    ($next:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
    };

    ($next:expr, chars) => {
        read_value!($next, String).chars().collect::<Vec<char>>()
    };

    ($next:expr, bytes) => {
        read_value!($next, String).into_bytes()
    };

    ($next:expr, usize1) => {
        read_value!($next, usize) - 1
    };

    ($next:expr, $t:ty) => {
        $next().parse::<$t>().expect("Parse error")
    };
}

fn main() {
    input!{
        a: usize,
        s: chars
    }
    let ss: String = s.into_iter().collect();
    if a >= 3200 {
        println!("{}", ss);
    }else{
        println!("red");
    }
}