import sys
#sys.stdin=open("input.txt", "r")
def DFS(L, sum):
    if sum>total//2:
        return
    if L==n:
        if sum==(total-sum):
            print("YES")
            sys.exit(0)
    else:
        DFS(L+1, sum+a[L])
        DFS(L+1, sum)

if __name__=="__main__":
    n=int(input())
    a=list(map(int, input().split()))
    total=sum(a)
    DFS(0, 0)
    print("NO")

    