#include <iostream>;
using namespace std;

int main()
{
	int fmas[100], smas[100], min, i, fmn, smn, k;
	cout << "Enter number of numbers of first massive" << endl;
	cin >> fmn;
	cout << endl << "Enter number of numbers of second massive" << endl;
	cin >> smn;
	cout << "Enter each number of first massive" << endl;
	for (i = 0; i < fmn; i++)
		cin >> fmas[i];
	cout << "Enter each number of second massive" << endl;
	for (i = 0; i < smn; i++)
		cin >> smas[i];
	min = fmas[0];
	for (i = 0; i < fmn; i++)
	for (k = 0; k < smn; k++)
	if (fmas[i] == smas[k])
		break;
	else if (min > fmas[i])
	{
		min = fmas[i];
		break;
	}
	cout << min;

}