n = 10
a = [0] * n
for i in range(n):
a[i] = int(input())
s = 0
for v in a:
if v < 50:
s += v
if s % 2 == 0:
print("+")
else:
print("-")
biA9IDEwCmEgPSBbMF0gKiBuCmZvciBpIGluIHJhbmdlKG4pOgogICAgYVtpXSA9IGludChpbnB1dCgpKQogICAgCnMgPSAwICAKZm9yIHYgaW4gYToKCWlmIHYgPCA1MDoKCQlzICs9IHYKCmlmIHMgJSAyID09IDA6CiAgICBwcmludCgiKyIpCmVsc2U6CiAgICBwcmludCgiLSIp