vector<ll> to[16],cost[16];
ll dp[1d5][16];
{
	ll@n, @m;
	rep(m){
		ll@u,@v,@c;
		to[--u].push_back(--v);
		cost[u].push_back(c);
		to[v].push_back(u);
		cost[v].push_back(c);
	}
	dp[0..(1<<n)-1][0...n-1]=-1;
	dp[1<<(0..n-1)][0..]=0;
	rep(s,1<<n)rep(v,n)if(dp[s][v]!=-1){
		rep(i,to[v].size())if(!(s&1<<to[v][i]))dp[s|1<<to[v][i]][to[v][i]] >?= dp[s][v]+cost[v][i];
	}
	ll ans=0;
	ans >?= dp[0..(1<<n)-1][0...n-1];
	wt(ans);
}