n = int(input().strip())

arr = [1 if int(temp) > 0 else -1 if int(temp) < 0 else 0 for temp in input().strip().split(' ')]

print("{0:.6f}".format(arr.count(1) / n))
print("{0:.6f}".format(arr.count(-1) / n))
print("{0:.6f}".format(arr.count(0) / n))
