#include <iostream>
#include <cstdio>
#include <vector>
#include <bitset>
#include <algorithm>
#define task "busline"
using namespace std;
using ll = long long;
using ld = long double;
const int N = 2e2 + 5;
const int M = 5e4 + 5;
const ll Inf = 1e17;
struct Edge
{
int u, v, c, d;
} e[M];
vector<int> adj[N], nadj[N];
int n, m;
int par[N];
ll d[7][N];
bool ok[N];
bitset<M> ck[7];
ll ans(Inf);
void Read()
{
cin >> n >> m;
for (int i = 1; i <= m; ++i)
{
cin >> e[i].u >> e[i].v >> e[i].c >> e[i].d;
adj[e[i].u].push_back(i);
nadj[e[i].v].push_back(i);
}
}
void Dijkstra(int x, vector<int> adj[N], ll d[N], bitset<M> &ck, int except)
{
for (int i = 0; i <= n; ++i)
{
d[i] = Inf;
ok[i] = 0;
par[i] = 0;
}
d[x] = 0;
while (1)
{
int v(0);
for (int i = 1; i <= n; ++i)
if (!ok[i] && d[v] > d[i])
v = i;
if (v == 0)
break;
ok[v] = 1;
for (auto i : adj[v])
if (i != except && d[e[i].v ^ e[i].u ^ v] > d[v] + e[i].c)
{
d[e[i].v ^ e[i].u ^ v] = d[v] + e[i].c;
par[e[i].v ^ e[i].u ^ v] = i;
}
}
for (int i = 1; i <= n; ++i)
if (i != x && d[i] != Inf)
ck[par[i]] = 1;
}
ll Proc(int i, int x, int y, const vector<int> &s)
{
int tmp1(s[0]), tmp2(s[3]);
if (ck[s[0]][i])
{
Dijkstra(x, adj, d[5], ck[5], i);
tmp1 = 5;
}
if (ck[s[3]][i])
{
Dijkstra(y, nadj, d[6], ck[6], i);
tmp2 = 6;
}
if (d[tmp1][e[i].v] == Inf || d[tmp2][e[i].u] == Inf)
return Inf;
ll res = d[tmp1][e[i].v] + e[i].c + e[i].d + d[tmp2][e[i].u];
tmp1 = s[2];
tmp2 = s[1];
if (ck[s[2]][i])
{
Dijkstra(y, adj, d[5], ck[5], i);
tmp1 = 5;
}
if (ck[s[1]][i])
{
Dijkstra(x, nadj, d[6], ck[6], i);
tmp2 = 6;
}
if ((d[tmp1][e[i].v] == Inf || d[tmp2][e[i].u] == Inf) && d[tmp1][x] == Inf)
return Inf;
res += min(d[tmp1][e[i].v] + e[i].c + d[tmp2][e[i].u], d[tmp1][x]);
return res;
}
void Solve()
{
Dijkstra(1, adj, d[1], ck[1], 0);
Dijkstra(1, nadj, d[2], ck[2], 0);
Dijkstra(n, adj, d[3], ck[3], 0);
Dijkstra(n, nadj, d[4], ck[4], 0);
if (d[1][n] != Inf && d[3][1] != Inf)
ans = d[1][n] + d[3][1];
for (int i = 1; i <= m; ++i)
{
ans = min(ans, Proc(i, 1, n, {1, 2, 3, 4}));
ans = min(ans, Proc(i, n, 1, {3, 4, 1, 2}));
}
cout << (ans == Inf ? -1 : ans);
}
int32_t main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
if (fopen(task ".INP", "r"))
{
freopen(task ".INP", "r", stdin);
freopen(task ".OUT", "w", stdout);
}
Read();
Solve();
}
