Submission #3230304

---

Source Code Expand

#![allow(unused_imports)]
use std::io::*;
use std::fmt::*;
use std::str::*;
use std::cmp::*;
use std::collections::*;

pub trait InputValue {
    fn parse(s: &str) -> Self;
}

pub fn read<T: InputValue>() -> T {
    let mut buf = String::new();
    let _ = stdin().read_line(&mut buf);
    T::parse(&buf.trim())
}

pub fn readn<T: InputValue>(n: usize) -> Vec<T> {
    let mut vec = vec![];
    for _ in 0..n {
        vec.push(read());
    }
    vec
}

pub fn readnc<T: InputValue>() -> Vec<T> {
    let mut vec = vec![];
    let line: String = read();
    for token in line.split_whitespace() {
        vec.push(T::parse(token));
    }
    vec
}

macro_rules! parse_single_value {
    ($($t:ty),*) => {
        $(
            impl InputValue for $t {
                fn parse(s: &str) -> $t { s.parse().unwrap() }
            }
        )*
	}
}
parse_single_value!(i32, i64, f32, f64, usize, String);

macro_rules! parse_tuple {
	($($t:ident),*) => {
		impl<$($t),*> InputValue for ($($t),*) where $($t: InputValue),* {
			fn parse(s: &str) -> ($($t),*) {
				let mut tokens = s.split_whitespace();
				let t = ($($t::parse(tokens.next().unwrap())),*);
				t
			}
		}
	}
}
parse_tuple!(A, B);
parse_tuple!(A, B, C);
parse_tuple!(A, B, C, D);
parse_tuple!(A, B, C, D, E);

// ===

fn main() {
    let n: usize = read();
    if n % digit_sum(n) == 0 {
        println!("Yes");
    } else {
        println!("No");
    }
}

fn digit_sum(x: usize): usize {
    let mut sum = 0;
    let mut x = x;
    while x >= 1 {
        sum += x % 10;
        x /= 10;
    }
    return sum;
}

Submission Info

Compile Error

error: expected one of `->`, `where`, or `{`, found `:`
  --> ./Main.rs:73:23
   |
73 | fn digit_sum(x: usize): usize {
   |                       ^

error: aborting due to previous error