#include<bits/stdc++.h>
using namespace std;
using LL = long long;
using ULL = unsigned long long;
#define rep(i,n) for(int i=0; i<(n); i++)

int N, M;
int D[50][50];
int S[50];

int main() {
    cin >> N;
    rep(i, N) cin >> S[i];
    rep(i, N) rep(j, N) D[i][j] = 500000000;
    cin >> M;
    rep(i, M) {
        int a, b, c; cin >> a >> b >> c;
        D[a][b] = c;
        D[b][a] = c;
    }

    rep(i, N) rep(j, N) rep(k, N) D[j][k] = min(D[j][k], D[j][i] + D[i][k]);

    int ans = 2000000000;
    for (int i = 1; i < N - 1; i++) for (int j = 1; j < N - 1; j++)
        if (i != j)
            ans = min(ans, D[0][i] + S[i] + D[i][j] + S[j] + D[j][N - 1]);
    cout << ans << endl;

    return 0;
}