#include #define rep(i,a,b) for(int i=a;i=b;i--) #define fore(i,a) for(auto &i:a) #define all(x) (x).begin(),(x).end() //#pragma GCC optimize ("-O3") using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); } typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60; templatebool chmax(T &a, const T &b) { if (abool chmin(T &a, const T &b) { if (b> E[16]; //--------------------------------------------------------------------------------------------------- int memo[1 << 16][16]; bool vis[1 << 16][16]; int rec(int rest, int lst) { if (vis[rest][lst]) return memo[rest][lst]; vis[rest][lst] = true; int ma = 0; fore(p, E[lst]) { int to = p.first; int cst = p.second; if (rest & (1 << to)) chmax(ma, rec(rest ^ (1 << to), to) + cst); } return memo[rest][lst] = ma; } //--------------------------------------------------------------------------------------------------- void _main() { cin >> N >> M; rep(i, 0, M) { int a, b, c; cin >> a >> b >> c; a--; b--; E[a].push_back({ b, c }); E[b].push_back({ a, c }); } int ans = 0; int allmsk = (1 << N) - 1; rep(i, 0, N) chmax(ans, rec(allmsk ^ (1 << i), i)); cout << ans << endl; }