#include <iostream>
#include <string>
#include <utility>
#include <algorithm>
#include <map>
#include <set>
#include <vector>
#include <cmath>
#include <cstdlib>
#include <queue>
#include <stack>
#include <iomanip>

using namespace std;

#define REP(i, n) for(ll i = 0;i < n;i++)
#define REPR(i, n) for(ll i = n;i >= 0;i--)
#define FOR(i, m, n) for(ll i = m;i < n;i++)
#define FORR(i, m, n) for(ll i = m;i >= n;i--)
#define REPO(i, n) for(ll i = 1;i <= n;i++)
#define ll long long
#define INF (ll)1 << 60
#define MINF (-1 * INF)
#define ALL(n) n.begin(),n.end()
#define MOD 1000000007
#define P pair<ll, ll>

ll n, m, c[100], ans = INF, s[100][100];
int main() {
	REP(i, 100)REP(j, 100)if (i != j)s[i][j] = INF;
	cin >> n;
	REP(i, n)cin >> c[i];
	cin >> m;
	REP(i, m) {
		ll a, b, c;
		cin >> a >> b >> c;
		s[a][b] = c;
		s[b][a] = c;
	}
	REP(k, n)REP(i, n)REP(j, n)s[i][j] = min(s[i][j], s[i][k] + s[k][j]);
	FOR(i, 1, n - 1) {
		FOR(j, 1, n - 1) {
			if (i == j)continue;
			ans = min(ans, s[0][i] + s[i][j] + s[j][n - 1] + c[i] + c[j]);
		}
	}
	cout << ans << endl;
}