#include <iostream>
#include <unordered_set>
#include <unordered_map>

int main() {
    std::unordered_set<std::string> statesNeeded({ "mt", "wa", "or", "id", "nv", "ut", "ca", "az" });

    std::unordered_map<std::string, std::unordered_set<std::string>> stations;
    stations.emplace(((std::string) "kone", (std::unordered_set<std::string>){"id", "nv", "ut" }));
}