03. Cash Joint

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

using namespace std;

bool is_find(vector<string>& v, string el) {
    return find(v.begin(), v.end(), el) != v.end();
}
int main() {
    map<string, double> account;
    vector<string> currencies;

    string CURRENCY_TICKER, currency, sum;
    cin >> CURRENCY_TICKER;

    while (CURRENCY_TICKER != "END") {
        cin >> sum;
        account[CURRENCY_TICKER] += stod(sum);
        if (!is_find(currencies, CURRENCY_TICKER)) {
            currencies.push_back(CURRENCY_TICKER);
        }
        cin >> CURRENCY_TICKER;
    }

    cin >> CURRENCY_TICKER;

    while (CURRENCY_TICKER != "END") {
        if (CURRENCY_TICKER == "+" || CURRENCY_TICKER == "-") {
            cin >> currency >> sum;
            account[currency] += (CURRENCY_TICKER == "+" ? stod(sum) : -stod(sum));
        }
        else if (CURRENCY_TICKER == "X") {
            cin >> currency >> sum;
            double s = stod(sum);
            account[currency] -= s;
            cin >> currency >> sum;
            s *= stod(sum);
            account[currency] += s;
        }
        else {
            for (auto& c : currencies) {
                printf("%s: %.2f\n", c.c_str(), account[c]);
            }
        }
        cin >> CURRENCY_TICKER;
    }

    return 0;
}