import java.util.*;

class Main {
        public static void main(String args[]) {
                try (Scanner sc = new Scanner(System.in)) {
                        int N = sc.nextInt();
                        int[] cost = new int[N];
                        for (int i = 0; i < N; i++) {
                                cost[i] = sc.nextInt();
                        }

                        int M = sc.nextInt();
                        int[][] bridge = new int[N][N];
                        for (int i = 0; i < N; i++) {
                                for (int j = 0; j < N; j++) {
                                        bridge[i][j] = 1 << 25;
                                }
                                bridge[i][i] = 0;
                        }
                        for (int i = 0; i < M; i++) {
                                int a = sc.nextInt(), b = sc.nextInt(), c = sc.nextInt();
                                bridge[a][b] = bridge[b][a] = c;
                        }
                        for (int k = 0; k < N; k++) {
                                for (int i = 0; i < N; i++) {
                                        for (int j = i + 1; j < N; j++) {
                                                bridge[i][j] = Math.min(bridge[i][j], bridge[i][k] + bridge[k][j]);
                                                bridge[j][i] = bridge[i][j];
                                        }
                                }
                        }
                        int ans = 1 << 26;
                        for (int i = 1; i < N - 1; i++) {
                                for (int j = 1; j < N - 1; j++) {
                                        if (i != j) {
                                                ans = Math.min(ans, bridge[0][i] + cost[i] + bridge[i][j] + cost[j] + bridge[j][N-1]);
                                        }
                                }
                        }
                        System.out.println(ans);
                }
        }
}