task.rs

use std::io::prelude::*;
use std::collections::HashMap;

fn main() {
    let mut input = String::new();
    std::io::stdin().read_to_string(&mut input).unwrap();
    let mut input_words = input.split_whitespace();
    let n: u32 = input_words.next().unwrap().parse().unwrap();
    let mut hashmap = HashMap::new();
    for _ in 0..n {
        let key = input_words.next().unwrap();
        let value: u32 = input_words.next().unwrap().parse().unwrap();
        hashmap.insert(key, value);
    }
    for key in input_words {
        match hashmap.get(key) {
            Some(value) => println!("{}={}", key, value),
            None => println!("Not found"),
        }
    }
}