#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
string h;
ll num,dis;
ll vv[]={1,10,100,1000,10000,100000,1000000,10000000,100000000,1000000000};
ll f(string & q)
{
    ll ret=0;
    string c;
    for(int i=0;i<q.size();i++)
    {
        if(q[i]=='.')
        {
            if((int)q.size()-i-1==2)break;
        }
        else c+=q[i];
    }

    int j=0;
    while(!c.empty())
    {
       // cout<<c.back()<<' ';
       int w=c.back()-'0';
        ret+=((ll)w)*vv[j];
        c.pop_back();
        j++;
    }

    return ret;
}
ll g( string & q )
{
    ll ret=0;
    if(q.size()<3)return 0;
    if(q[(int)q.size()-3]=='.')
    {
        int j=0;
        while(!q.empty())
        {if(q.back()=='.')break;
           ret+=(ll)(q.back()-'0')*vv[j];
           q.pop_back();
           j++;

        }
    }
    return ret;
}
int main(){
  cin>>h;
  int lc =0;
  for(int i=0;i<h.size();i++)
  {string q;
      if(!isalpha(h[i]))
      {
          for(;i<h.size();i++)
          {
              if(!isalpha(h[i]))
              {
                  q+=h[i];
              }else break;
          }

          ll aa=f(q);
          ll bb=g(q);


          num+=aa;
          dis+=bb;
          num+=dis/100;
          dis%=100;
      }
  }
  string ans;
  if(num==0)ans.push_back('0');
  while(num)
  {
      ll f=num%10;
      ans.push_back(f+'0');
      num/=10;
  }
  reverse(ans.begin(),ans.end());
  for(int i=0;i<ans.size();i++)
  {
      if(((int)ans.size()-i)%3==0&&i)cout<<'.';
      cout<<ans[i];
  }
  if(dis/10)
  cout<<'.'<<dis;
  if(dis!=0&&dis/10==0)cout<<".0"<<dis%10;;
        return 0;
}