#include <map>
#include <vector>
#include <string>

std::map<std::string, int> final_standings(
    const std::vector<std::map<std::string, int>>& contests
) {
    std::map<std::string, int> result;
    for (const auto& contest : contests) {
        for (const auto& studentResult : contest) {
            auto [it, inserted] = result.try_emplace(
                studentResult.first,
                studentResult.second);
            if (!inserted) {
                it->second = std::max(it->second, studentResult.second);
            }
        }
    }
    return result;
}