import sys
#input = sys.stdin.readline
#input = sys.stdin.buffer.readline #文字列はダメ
#sys.setrecursionlimit(1000000)
#import bisect
#import itertools
#import random
#from heapq import heapify, heappop, heappush
#from collections import defaultdict 
#from collections import deque
#import copy
#import math
#from functools import lru_cache
#@lru_cache(maxsize=None)
#MOD = pow(10,9) + 7
#MOD = 998244353
#dx = [1,0,-1,0]
#dy = [0,1,0,-1]
#dx8 = [1,1,0,-1,-1,-1,0,1]
#dy8 = [0,1,1,1,0,-1,-1,-1]


def main():
    N,X,Y = map(int,input().split())
    R = list(map(int,input().split()))

    #円に接するという条件がうまく言い換えられず、解説AC。

    if N == 1:
        if X**2 + Y**2 == R[0]**2:
            print('Yes')
        else:
            print('No')
    else:
        lim = sum(R)*2 - min(R)
        if X**2 + Y**2 <= lim**2:
            print('Yes')
        else:
            print('No')



if __name__ == '__main__':
    main()