#include<iostream>
#include<string>
#include <vector>
#include <algorithm>

using namespace std;

int main() {
  vector<pair<string, int>> result;
  string input;
  cin >> input;
  int number = INT_MIN;
  string metal = "";
  while (input != "stop") {
    if (input[0] >= '1' && input[0] <= '9') {
      number = stoi(input);
    } else {
      metal = input;
    }
    if (metal.length() > 0 && number != INT_MIN) {
      auto it = find_if(result.begin(), result.end(), [&](const pair<string, int>& p) { return p.first == metal; });
      if (it != result.end()) {
        it->second += number;
      } else {
        result.emplace_back(metal, number);
      }
      number = INT_MIN;
      metal = "";
    }
    cin >> input;
  }
  for (auto& it : result) {
    cout << it.first << " -> " << it.second << endl;
  }
}