#[macro_export] macro_rules! setup { { mut $input:ident: SplitWhitespace $(,)? } => { use std::io::Read; let mut buf = String::new(); std::io::stdin().read_to_string(&mut buf).ok(); let mut $input = buf.split_whitespace(); }; } #[macro_export] macro_rules! parse_next { ($str_iter:expr) => { $str_iter.next().unwrap().parse().ok().unwrap() }; } fn main() { setup! { mut input: SplitWhitespace }; let t: usize = parse_next!(input); for _ in 0..t { let n: usize = parse_next!(input); let mut a: Vec = (0..n).map(|_| parse_next!(input)).collect(); a.sort(); let sum = a.iter().sum::(); if sum % 3 != 0 { println!("{}", "No"); continue; } let max = a.iter().last().unwrap().to_owned(); let ans = (|| match max <= (sum / 3) { true => "Yes", false => "No", })(); println!("{}", ans); } }