import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int[] stones = new int[n + 1];
        for (int i = 1; i <= n; i++) {
            stones[i] = sc.nextInt();
        }
        int add = 0;
        boolean enable = true;
        for (int i = n; i >= 1 && enable; i--) {
            enable = ((stones[i] + add) % i == 0);
            add += (stones[i] + add) / i;
        }
        if (enable) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
    
}

class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        if (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}