#include<iostream>
#include<iomanip>
using namespace std;

int main()
{
    int n;
    cin>>n;
    double totalWeigth=0;
    for(int i =0;i<n;i++)
    {
      int m; 
      cin>>m;
      if(m>10)
      {
          cout<<"Too many bags";
          return 0;
      }
      for(int j=0;j<m;j++)
      {
          double weight;
          cin>>weight;
          if(weight<0)
          {
              cout<<"Invalid weight";
              return 0;
          }
          totalWeigth +=weight;
          if(totalWeigth>100)

      }
    }
    cout<<fixed<<setprecision(2)<<totalWeigth;
    return 0;
}