def main():
    import sys
    input = sys.stdin.read
    data = input().split()
    
    N = int(data[0])
    A = list(map(int, data[1:N+1]))
    
    if N == 1:
        print("Yes")
        return
    
    max_val = max(A)
    if max_val % 2 != 0:
        print("No")
        return
    
    all_same = True
    first = A[0]
    for num in A:
        if num != first:
            all_same = False
            break
    
    if all_same:
        print("No")
        return
    
    print("Yes")

if __name__ == "__main__":
    main()