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#include
#include
#include
#include
const int NUM_PLAYERS = 3;
int main() {
std::array player_values;
std::set eigenvalues{};
int n;
int value;
for (int i_player = 0; i_player < NUM_PLAYERS; i_player++) {
std::cin >> n;
for (int i = 0; i < n; i++) {
std::cin >> value;
player_values[i_player].insert(value);
}
}
eigenvalues = player_values[0];
std::set temp_eigenvalues{};
for (int i_player = 1; i_player < NUM_PLAYERS; i_player++) { // i_player = 1 because player 0 is used!
std::set_intersection(
eigenvalues.begin(), eigenvalues.end(),
player_values[i_player].begin(), player_values[i_player].end(),
std::inserter(temp_eigenvalues, temp_eigenvalues.begin())
);
eigenvalues = temp_eigenvalues;
temp_eigenvalues = {};
}
std::cout