#include "bits/stdc++.h"
using namespace std;

typedef long long Int;
#define REP(i,n) for(int (i)=0;(i)<(int)(n);++(i))

int N;
int cost[50];
int g[50][50];
const int INF = 1000000000;

int main() {
	cin >> N;
	REP(i, N) cin >> cost[i];
	REP(i, N) REP(j, N) g[i][j] = INF;
	REP(i, N) g[i][i] = 0;

	int M; cin >> M;
	REP(m, M) {
		int a, b, c;
		cin >> a >> b >> c;
		g[a][b] = g[b][a] = c;
	}
	REP(k, N) REP(i, N) REP(j, N) g[i][j] = min(g[i][j], g[i][k] + g[k][j]);

	int ans = INF;
	for (int i = 1; i < N - 1; i++) {
		for (int j = 1; j < N - 1; j++) if(i != j) {
			int v = cost[i] + cost[j] + g[0][i] + g[i][j] + g[j][N - 1];
			ans = min(ans, v);
		}
	}
	cout << ans << endl;

}