#include <bits/stdc++.h>

#define mp make_pair
#define mt make_tuple
#define pb push_back
#define rep(i, n) for (int i = 0; i < (n); i++)

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef pair<long, long> pll;

const int INF = 1 << 29;
const double EPS = 1e-9;
const int MOD = 100000007;

const int dx[] = {1, 0, -1, 0}, dy[] = {0, -1, 0, 1};
int N,M;
vector<int> S;
int dist[55][55];
int main() {
  cin >> N;
  S.resize(N);
  for (int i = 0; i < N; i++){
    cin >> S[i];
  }
  cin >> M;
  for (int i = 0; i < 55; i++){
    for(int j = 0; j < 55; j++){
      dist[i][j] = INF;
      if (i == j)dist[i][j] = 0;
    }
  }
  for (int i = 0; i < M; i++){
    int A,B,C;
    cin >> A >> B >> C;
    dist[A][B] = C;
    dist[B][A] = C;
  }
  for (int k = 0; k < N; k++){
    for (int i = 0; i < N; i++){
      for (int j = 0; j < N; j++){
        dist[i][j] = min(dist[i][j], dist[i][k] + dist[k][j]);
      }
    }
  }

  ll result = 1LL << 50;
  for (int i = 1; i < N - 1; i++){
    for (int j = 1; j < N - 1; j++){
      if (i == j)continue;
      ll res = dist[0][i] + S[i] + dist[i][j] + S[j] + dist[j][N - 1];
      result = min(result, res);
    }
  }
  cout << result << endl;
  return 0;
}