import java.io.PrintWriter;
import java.util.Scanner;

public class Main {

	public static void a(String[] args) {
		try (Scanner scan = new Scanner(System.in)) {
			int N = scan.nextInt();
			int stayCost[] = new int[N];
			for(int i=0; i<N; i++) {
				stayCost[i] = scan.nextInt();
			}
			int M = scan.nextInt();
			int moveCost[][] = new int[N][N];
			for(int i=0; i<N; i++) {
				for(int j=0; j<N; j++) {
					moveCost[i][j] = 1000000;
				}
			}

			for(int i=0; i<M; i++) {
				int from = scan.nextInt();
				int to = scan.nextInt();
				int cost = scan.nextInt();
				moveCost[from][to] = cost;
				moveCost[to][from] = cost;
			}

			for(int k = 0; k < N; ++k) {
				for(int i = 0; i < N; ++i) {
					for(int j = 0; j < N; ++j) {
						moveCost[i][j] = Math.min(moveCost[i][j], moveCost[i][k] + moveCost[k][j]);
					}
				}
			}

			int ans = Integer.MAX_VALUE;
			for(int i=1; i<N-1; i++) {
				for(int j=1; j<N-1; j++) {
					if(i==j) continue;
					int tmp = moveCost[i][0] + moveCost[j][i] + moveCost[N-1][j] + stayCost[i] + stayCost[j];
					ans = Math.min(ans, tmp);
				}
			}

			System.out.println(ans);
		}
	}


	public static void main(String[] args) throws Exception {
		PrintWriter pw=new PrintWriter(System.out);
		Scanner sc=new Scanner(System.in);

		int n=sc.nextInt();
		int[] stcst=new int[n];

		for(int i=0;i<n;i++){
			stcst[i]=sc.nextInt();
		}
		int m=sc.nextInt();
		int[][] mvcst=new int[n][n];
		for(int i=0;i<n;i++){
			for(int j=0;j<n;j++){
				mvcst[i][j]=1000000;
			}
		}
		
		for(int i=0;i<m;i++){
			int from=sc.nextInt();
			int to=sc.nextInt();
			int cst=sc.nextInt();
			mvcst[from][to]=cst;
			mvcst[to][from]=cst;
		}
		for(int k=0;k<n;k++){
			for(int j=0;j<n;j++){
				for(int i=0;i<n;i++){
					mvcst[i][j]=Math.min(mvcst[i][j], mvcst[i][k]+mvcst[k][j]);
				}
			}
		}

		int ans=Integer.MAX_VALUE;
		for(int i=1;i<n-1;i++){
			for(int j=1;j<n-1;j++){
				if(i==j)continue;
				int tmp=mvcst[i][0]+mvcst[i][j]+mvcst[n-1][j]+stcst[i]+stcst[j];
				ans=Math.min(tmp, ans);
			}
		}
		pw.println(ans);
		pw.close();
		sc.close();
	} 

}