#include <iostream>
#include <algorithm>

#define rep(i,a,b) for(int i=(a);i<(b);i++)
using namespace std;
#define INF 1e6

int main(void)
{
	int N, M;
	cin >> N;
	int S[50];
	rep(i,0,N) cin >> S[i];

	cin >> M;
	int G[50][50];
	int from, to, cost;
	rep(i,0,N) rep(j,0,N) G[i][j] = INF;
	rep(i,0,M) {
		cin >> from >> to >> cost;
		G[from][to] = min(G[from][to], cost);
		G[to][from] = G[from][to];
	}

	rep(i,0,N) G[i][i] = 0;
	rep(k,0,N) rep(i,0,N) rep(j,0,N) {
		if(G[i][j] > G[i][k] + G[k][j]) G[i][j] = G[i][k] + G[k][j];
	}

	// rep(i,0,N) rep(j,0,N) printf("G[%d][%d] = %d\n",i,j,G[i][j]);

	int ans = INF;
	rep(i,1,N-1) rep(j,1,N-1) {
		if(i == j) continue;
		if(ans > G[0][i] + G[i][j] + G[j][N-1] + S[i] +S[j]) {
			ans = G[0][i] + G[i][j] + G[j][N-1] + S[i] +S[j];
			// printf("i=%d j=%d ans=%d\n",i,j,G[0][i] + G[i][j] + G[j][N-1] + S[i] +S[j]);
		}
	}

	cout << ans << endl;

	return 0;
}