#include <bits/stdc++.h>

using namespace std;

const int INF = 1<<28;

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int n;
  cin >> n;

  vector<int> s(n);
  for (int i = 0; i < n; i++)
    cin >> s[i];

  vector<vector<int> > dp(n, vector<int>(n));
  for (int i = 0; i < n; i++)
    for (int j = 0; j < n; j++)
      dp[i][j] = i == j ? 0 : INF;
  
  int m;
  cin >> m;
  for (int i = 0; i < m; i++) {
    int a, b, c;
    cin >> a >> b >> c;
    dp[a][b] = dp[b][a] = c;
  }

  for (int k = 0; k < n; k++)
    for (int i = 0; i < n; i++)
      for (int j = 0; j < n; j++)
        dp[i][j] = min(dp[i][j], dp[i][k] + dp[k][j]);

  int ret = INF;
  for (int i = 1; i < n-1; i++) {
    for (int j = 1; j < n-1; j++) {
      if (i == j) continue;
      ret = min(ret, dp[0][i] + dp[i][j] + dp[j][n-1] + s[i] + s[j]);
    }
  }

  cout << ret << endl;
  
  return 0;
}