UVA Problem 10014 Solution

Problem Solving, UVa

#include <bits/stdc++.h>

using namespace std;

int main()

{

   

    double a0,an,a1,a,b,t,tc,n;

    double c[3002];

    int i;

     cin>>t;

     while(t--)

{

    b=0;

cin>>n;

cin>>a0>>an;

if(n==0) printf("%0.2lf\n",an);

else{

for( i=0;i<n;i++)

{

    cin>>c[i];



b+=((n-i)*c[i])*2;

}

 a=((n*a0)+an);

a1=(a-b)/(n+1);

   

printf("%0.2lf\n",a1);   

    }

   if(t) printf("\n");

}

 return 0;

}

 

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