#include <iostream>
int w[11][11];
bool visit[11] = { false, };
int min = 100000000;

void back(int s, int v, int n, int c,int cnt) {
	if (cnt == n && min > c + w[v][s] && w[v][s] != 0) {
		min = c + w[v][s];
		return;
	}

	visit[v] = true;
	for (int i = 0; i < n; i++) {
		if (!visit[i] && min > c + w[v][i] && w[v][i] != 0)
			back(s, i, n, c + w[v][i], cnt + 1);
	}
	visit[v] = false;
}

int main() {
	int n;
	std::cin >> n;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++)
			std::cin >> w[i][j];
	}
	back(0, 0, n, 0, 1);
	std::cout << min;
	return 0;
}