def inpf() a=gets.chomp.split(" ").map(&:to_f)end

def inps() a=gets.chomp.split(" ")end

def copy(a) Marshal.load(Marshal.dump(a)) end

def kaijo(n,r = 10**9+7)(n < 2)? 1 : (2..n).inject{|memo,u|memo=(memo*u)%r} end

def na(n,d=0) Array.new(n,d)end

def na2(n,m,d=0) Array.new(n){Array.new(m,d)}end

def na3(n,m,l,d=0) Array.new(n){Array.new(m){Array.new(l,d)}}end

def inp() a=gets.chomp.split(" ").map(&:to_i)end

def r_up(a, b) (a+b-1)/b end

n,m= inp
l = 2**n
dp = na(l,1e20)
dp[0] = 0
m.times do
  a,b = inp
  c = inp
  pl = 0
  c.each do |d|
    pl += (1 << (d-1))
  end
  l.times do |i|
    ni = (i | pl)
    dp[ni] = [dp[ni] , dp[i]+a].min
  end
end
p (dp[-1] == 1e20)? -1 : dp[-1]