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Simon has given N ratios in the form of A and B that is represented as A/B.

Simon has given N ratios in the form of A and B that is represented as A/B. The values of A and B are represented as double data type values. The values of B are incorrect. The actual values of B are B+R. Simon know the actual sum of all the ratios that is available in variable K.

Note: The true values of B, represented as (B+R), are always greater than 0. Simon’s task is to determine the value of R.

1 <= N <= 1000
1 <= A <= 1000
|B| <= 1000
1 <= K <= 10^6

Input Format:
First line: Two integers N and col denoting the number of ratios and the value 2 respectively
Next N lines: Each line contains two double values A and B
Last line: A double value K denoting the sum of all the ratios

Output Format:
Print the value of R. Simon’s answer must contain an absolute or relative error of less than 10^-6.

using namespace std;
double func(double arr[10][2],double r,int n)
  double ans = 0;
  for(int i = 0; i < n; i++)
    ans+= arr[i][0]/(arr[i][1]+r);
  return ans;
double maxi(double arr[10][2],int n)
{ double m=0;
  for(int i=0;i<n;i++)
  return m;
int main()
  int n,col;
  cout<<"Enter the value of N and col(2 respectively):  ";
  double arr[10][2];  //col == 2
  cout<<"Enter the ratio in form A and B: ";
  for (int i = 0; i < n; i++)
  double hi=maxi(arr,n),lo=0.0,mid=0.0;
  double curr,k;
  cout<<"Enter  the K value: ";
      lo = mid + 1e-7;
      hi = mid - 1e-7;
  return 0;


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