import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.NoSuchElementException;

public class Main implements Runnable {
	
	public static void main(String[] args) {
		new Main().run();
	}

	public void run() {
		solve();
	}
	
	void solve() {
		FastScanner sc=new FastScanner();
		PrintWriter pw=new PrintWriter(System.out);
		
		int zero=0;
		int N=sc.nextInt();
		long[] A=new long[N];
		ArrayList<Long> list=new ArrayList<>();
		for (int i=0;i<N;++i) {
			A[i]=sc.nextLong();
			if (A[i]==0) ++zero;
			else {
				list.add(A[i]);
			}
		}
		if (list.size() <= 2) {
			System.out.println("Yes");
			return;
		}
		Collections.sort(list);
		long d=Long.MAX_VALUE;
		for (int i=0;i+1<list.size();++i) {
			long d2=list.get(i+1)-list.get(i);
			d=Math.min(d, d2);
		}
		int need=0;
		for (int i=0;i+1<list.size();++i) {
			long d2=list.get(i+1)-list.get(i);
			if (d==0&&d2==0) continue;
			if ((d==0&&d2!=0)||d2%d!=0) {
				System.out.println("No");
				return;
			}
			if (d!=0) {
				need+=d2/d-1;
			}
		}
		System.out.println(need<=zero?"Yes":"No");
		pw.close();
	}
	
	
	static void tr(Object...objects) {
		System.out.println(Arrays.deepToString(objects));
	}
	
}


class FastScanner {
    private final InputStream in = System.in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;
    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }
    private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
    private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
    private void skipUnprintable() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;}
    public boolean hasNext() { skipUnprintable(); return hasNextByte();}
    public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }
    public int nextInt() {
    	return (int)nextLong();
    }
}