input()
s = [int(i) for i in input().split()]
f = 0
for i in s:
    if (f == 0):
        if (i % 2 == 0):
            print('+', end='')
        else:
            f = 1
    elif (f == 1):
        if (i % 2 == 0):
            print('+', end='')
            f = 2
        else:
            print('x', end='')
    else:
        print('x', end='')