HackerEarth Input for Rust

main.rs

use std::io;

fn main() {
    let mut input = String::new();

    io::stdin().read_line(&mut input)
        .expect("Failed to read line.");

    let test_cases: u16 = input
        .trim()  // trim new line char
        .parse()
        .expect("Failed to parse unsigned int.");

    println!("test_cases: {}", test_cases);
}