#include<iostream>
#include<string>
#include<vector>
#include<set>
#include<algorithm>
#define ll long long
#define PLL pair<ll,ll>
#define VS vector<string>
#define VLL vector<ll,ll>
#define rep(i,a) for (ll i=0;i<a;i++)
#define nrep(i,n,a) for (ll i=n;i<a;i++)
#define INF 1145141919810
#define VMIN(vec) *std::max_element(vec.begin(),vec.end())
#define VMIN(vec) *std::max_element(vec.begin(),vec.end())
#define OUT(n) cout<<n<<endl
#define TS(n) to_string(n)

using namespace std;

ll dist[51][51];

void floyd(ll n) {
	rep(k, n) rep(i, n) rep(j, n) dist[i][j] = min(dist[i][j], dist[i][k] + dist[k][j]);
}

int main() {
	ll n; cin>>n;
	ll s[50],a,b,c;
	rep(i, n) cin>>s[i];
	ll m; cin>>m;
	rep(i, n) rep(j, n) dist[i][j] = INF;
	rep(i, m){
		cin>>a>>b>>c;
		dist[a][b] = dist[b][a] = c;
	}
	floyd(n);
	ll temp ,ans=INF;
	nrep(i, 1, n - 1) nrep(j, 1, n - 1) if (i != j) {
			temp = dist[0][i] + dist[i][j] + dist[j][n - 1] + s[i] + s[j];
			ans = min(ans, temp);
	}OUT(ans);
	return 0;
}