Rust-1

use std::io;
fn main() {
    let mut input = String::new();
    io::stdin().read_line(&mut input)
        .expect("failed to read line");
  let words = input.split_whitespace().rev();
    let mut result = 0;
    for word in words {
        let ii:i32 = word.trim().parse().expect("error");
        result += ii;
    }
    println!("{}",result);
}

String->i32,u32,f32使用.trim().parse() i32,u32,f32->String使用.to_string()