#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000001



int main(){
	
	int N;
	cin>>N;
	vector<int> S(N);
	rep(i,N)cin>>S[i];
	
	vector dis(N,vector<int>(N,Inf));
	
	rep(i,N)dis[i][i] = 0;
	int M;
	cin>>M;
	rep(i,M){
		int a,b,c;
		cin>>a>>b>>c;
		dis[a][b] = c;
		dis[b][a] = c;
	}
	
	rep(i,N){
		rep(j,N){
			rep(k,N){
				dis[j][k] = min(dis[j][k],dis[j][i] + dis[i][k]);
			}
		}
	}
	int ans = Inf;
	for(int i=1;i<N-1;i++){
		for(int j=1;j<N-1;j++){
			if(i==j)continue;
			if(dis[0][i]==Inf||dis[0][j]==Inf)continue;
			ans = min(ans,dis[0][i] + dis[i][j] + dis[j][N-1] + S[i] + S[j]);
		}
	}
	cout<<ans<<endl;
	
	return 0;
}