io

a.rs

#![allow(unused)]
use std::io;
use std::collections::*;
use std::str::FromStr;


fn main() {
    let a: Vec<i32> = read_tokens();
    let b: Vec<String> = read_tokens();
    println!("Hello, wo123rld! : {} / {}", a[0] + a[1] + a[2], b[1]);

    let (x, y): (i32, String) = read_tuple2();
    println!("ano : {} / {}", x, y);
}


fn read_line() -> String {
    let mut buffer = String::new();
    io::stdin().read_line(&mut buffer).expect("failed to read line");
    buffer
}

fn read_i32() -> i32 {
    read_line().trim().parse().unwrap_or_else(|e| panic!("{}", e))
}

fn read_tuple2<S:FromStr, T:FromStr>() -> (S, T) {
    let v: Vec<String> = read_tokens();
    return (
        v[0].parse().unwrap_or_else(|e| panic!("ohmygod")),
        v[1].parse().unwrap_or_else(|e| panic!("ohmygod"))
    )
}

fn read_tuple3<S:FromStr, T:FromStr, U:FromStr>() -> (S, T, U) {
    let v: Vec<String> = read_tokens();
    return (
        v[0].parse().unwrap_or_else(|e| panic!("ohmygod")),
        v[1].parse().unwrap_or_else(|e| panic!("ohmygod")),
        v[2].parse().unwrap_or_else(|e| panic!("ohmygod"))
    )
}

fn read_tokens<T: std::str::FromStr>() -> Vec<T> {
    let mut buffer = String::new();
    io::stdin().read_line(&mut buffer).expect("failed to read line");
    let mut buffer = buffer.split_whitespace();
    let mut tokens = vec![];
    loop {
        match buffer.next() {
            Some(token) => tokens.push(token.to_string().parse().unwrap_or_else(|e| panic!("ohmygod"))),
            None        => break
        }
    }
    tokens
}