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By: a guest on Apr 29th, 2012  |  syntax: C++  |  size: 0.22 KB  |  hits: 19  |  expires: Never
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  1. #include <stdio.h>
  2. int main()
  3. {
  4.     int i,t,n;
  5.     double a,b;
  6.     scanf("%d",&t);
  7.     while(t--){scanf("%d",&n);for(b=1.0,i=2;i<=n;i++,b=a) a=b+n/(double)(n-i+1);printf("%.2lf\n",n==1 ? b : a);}
  8.     return 0;
  9. }
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