import java.util.Scanner;
class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] A = new int[N];
		long sum = 0;
		int min = Integer.MAX_VALUE;
		for(int i=0;i<N;i++){
			sum += A[i] = sc.nextInt();
			min = Math.min(A[i],min);
		}
		if(sum%N>0){
			System.out.println("No");
			return;
		}
		for(int num:A){
			if((num-min)%N>0){
				System.out.println("No");
				return;
			}
		}
		System.out.println("Yes");
	}
}