Write a program to compute 1/2+2/3+3/4+...+n/n+1 with a given n input by console (n>0).


Topic: Write a program to compute 1/2+2/3+3/4+...+n/n+1 with a given n input by console (n>0).

Solution

n=int(raw_input())
sum=0.0
for i in range(1,n+1):
    sum += float(float(i)/(i+1))
print sum



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