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a=len(arr)
P_Num=len([i for i in arr if i>0])
N_Num=len( [i for i in arr if i<0])
Zero_Num=len([i for i in arr if i==0])
PRatio=P_Num/a
NRatio=N_Num/a
ZRatio=Zero_Num/a
print("{:.6f}".format(PRatio))
print("{:.6f}".format(NRatio))
print("{:.6f}".format(ZRatio))
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