#include <iostream>
    #include <map>
    using namespace std;
    int main ()
    {
        try {
            map<char, int> Data;
            map<char, int> :: iterator Iter;
            Data['P'] = 55;
            Data['Q'] = 105;
            Data['R'] = 155;
            Data['S'] = 205;
            Iter = Data.find('Q');
            Data.erase (Iter);
            Data.erase (Data.find('S'));
            cout << Data.find('P') -> second << '\n';
        }
        catch (...) 
        {
            cout << "Unknown exception: " << endl;
        }
        return 0;
    }