#!/usr/bin/env python

## YES
# n = 4
# a = [1, 2, 4, 7]
# k = 13

## NO
n = 4
a = [1, 2, 4, 7]
k = 15

def dfs(i, sum):
    if i == len(a):
        return sum == k

    if dfs(i + 1, sum):
        return True

    if dfs(i + 1, sum + a[i]):
        return True

    return False

def main():
    if dfs(0, 0):
        print "Yes"
    else:
        print "No"

main()