yo i have problem with the code

yo this is code:
int CalculateLowerBound(const State& current, const vector<int>& distances, int numCities) {
    int lowerBound = current.cost;

    for (int city = 0; city < numCities; ++city) {
        if (!(current.visited & (1 << city))) {
            int minDist = INF;

            // Find the two smallest distances to unvisited cities
            for (int nextCity = 0; nextCity < numCities; ++nextCity) {
                if (city != nextCity && !(current.visited & (1 << nextCity))) {
                    minDist = min(minDist, distances[city * numCities + nextCity]);
                }
            }

            lowerBound += minDist;
        }
    }

    return lowerBound;
}