N = int(input())
A = [int(x) for x in input().split()]
def dfs(i, a, b, c):
    if i==N: 
        if a==b and b==c:
            print('Yes')
            exit()
    else:
        dfs(i+1, a+A[i], b, c)
        dfs(i+1, a, b+A[i], c)
        dfs(i+1, a, b, c+A[i])
dfs(0, 0, 0, 0)
print('No')