#include <string>
#include <vector>
#include <map>
#include <iostream>
#include <sstream>

using namespace std;

struct run_info {
    int size;               // number of elements.
    vector<int> disp;       // displacements
    vector<float> load;     // loads
};


typedef map<int, run_info> InfoMap;
typedef vector<int> DispVector;
typedef vector<float> LoadVector;

int main() {
    InfoMap runs;
    for(string line; getline(cin, line); ) {
        if(line.empty()) continue;

        string tmp;
        int run, num, disp;
        float load;
        stringstream ss(line);
        ss >> run >> num >> tmp >> disp >> load;

        pair<InfoMap::iterator, bool> x = runs.insert(make_pair(run, run_info()));
        run_info& inf = x.first->second;
        inf.size = max(inf.size, num);
        inf.disp.push_back(disp);
        inf.load.push_back(load);
    }

    // Informatics to compute.
    // - Average load before fail
    // - Average elements before fail
    // - load to displacement

    typedef pair<int, double> Count;
    typedef std::map<int, pair<int, double>> LoadToDisp;
    LoadToDisp l2d;
    for(InfoMap::iterator i = runs.begin(); i != runs.end(); ++i) {
        run_info& inf = i->second;
        for(size_t j = 0; j < inf.load.size(); ++j) {
            int l = int(inf.load[j] * 100);
            Count& cnt = l2d[l];
            cnt.first++;
            cnt.second += inf.disp[j];
        }
    }
    for(LoadToDisp::iterator i = l2d.begin(); i != l2d.end(); ++i) {
        Count& cnt = i->second;
        cnt.second /= double(cnt.first);
        cout << float(i->first / 100.0f) << "\t" << cnt.second << "\n";
        // cout << float(i->first / 100.0f) << "\t" << cnt.second << "\t" << cnt.first << "\n";
    }

    return 0;
}