n=gets.to_i
stay=(1..n).map{gets.to_i}
d=(1..n).map{(1..n).to_a}
(0...n).map{|i|
  (0...n).map{|j| d[i][j]=1e12.to_i}
  d[i][i]=0
}

m=gets.to_i
(1..m).map{
  a,b,c=gets.split.map(&:to_i)
  d[a][b]=d[b][a]=c
}

(0...n).map{|k|
  (0...n).map{|i|
    (0...n).map{|j|
      d[i][j] = [ d[i][j], d[i][k] + d[k][j] ].min
    }}}

ans = 1e13.to_i

(1..(n-2)).map{|i|
  (1..(n-2)).map{|j|
    if i != j
      r = d[0][i] + d[i][j] + d[j][n-1]
      r += stay[i] + stay[j]
      ans = [ans, r].min
    end
  }
}

p ans