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n = float(raw_input())
lst = [int(x) for x in raw_input().split()]
print format(len([x for x in lst if x > 0])/n, ".6f")
print format(len([x for x in lst if x < 0])/n, ".6f")
print format(len([x for x in lst if x == 0])/n, ".6f")
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n = float(raw_input()) lst = [int(x) for x in raw_input().split()] print format(len([x for x in lst if x > 0])/n, ".6f") print format(len([x for x in lst if x < 0])/n, ".6f") print format(len([x for x in lst if x == 0])/n, ".6f")