#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, m, k;
  cin >> n >> m >> k;
  VI a(k);
  rep(i, k) cin >> a[i], a[i]--;
  int dist[16][16];
  rep(i, n) rep(j, n) cin >> dist[i][j];
  constexpr int INF = 1001001001;
  VVI dp(1 << n, VI(n, INF));
  rep(i, n) dp[1 << i][i] = 0;
  rep(s, 1 << n) rep(u, n) if (int val = dp[s][u]; val != INF) {
    rep(v, n) chmin(dp[s | 1 << v][v], val + dist[u][v]);
  }
  int ans = INF;
  rep(s, 1 << n) if (popcount(0U + s) >= m) {
    for (int ai : a) chmin(ans, dp[s][ai]);
  }
  cout << ans << '\n';
}