package main

import  . "fmt"

func main() {
	var n int
	Scan(&n)
	s:=0
	for i:=1;n>i;i++ {
		var a int
		Scan(&a)
		s+=a
	}
	c:=0
	for i:=0;i<=100;i++ {
		if (s+i)%n==0 {
			c++
		}
	}
	Println(c)
}