#include <string>
#include <iostream>
#include <algorithm>
#include <vector>
#include <sstream>
 
using namespace std;
 
struct entry {
    string name;
    unsigned quantity;
};
 
vector<entry> readData()
{
    vector<entry> data;
 
    string line, name;
    unsigned quantity;
 
    while (getline(cin, line) && 
            istringstream(line) >> name >> quantity)
    {
        auto found = find_if(begin(data), end(data), [&](entry const& a) { return a.name == name; });
        if (end(data) == found)
            data.push_back({name, quantity});
        else
            found->quantity += quantity;
    }
    return data;
}
 
int main()
{
    vector<entry> const data = readData();
    for (auto it = data.begin(); it != data.end(); ++it)
        cout << it->name << " " << it->quantity << "\n";
}
 
 

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apple 5
pear 2
grape 6
mangoes 3
apple 2
mangoes 9