use std::io::Read;

fn main() {
	let mut s = String::new();
	std::io::stdin().read_to_string(&mut s).ok();
	let mut itr = s.trim().split_whitespace();
	let n: i32 = itr.next().unwrap().parse().unwrap();
	let a: Vec<i32> = itr.map(|e| e.parse().unwrap()).collect();
	let s: i32 = a.iter().sum();
	let ans = (0..100).filter(|&i| (s + i) % n == 0).count();
	println!("{}", ans);
}