#include <bits/stdc++.h>
using namespace std;
long long k[50000][4];
long long inf = (long long)1000000000*1000000000;
long long dis[4][200][2];
map<vector<long long>,int> kr;
vector<vector<vector<long long>>> gr[2];
priority_queue<vector<long long>> pq;
void dk(long long v,long long c,long long p,long long p2)
{
for(int i = 0;i<gr[p2][v].size();i++)
{
if(v == 4)
{
// cout<<v<<" "<<c<<" "<<i<<" "<<p<<" "<<p2<<" "<<dis[p][gr[p2][v][i][0]][0]<<" "<<gr[p2][v][i][1]<<"\n";
}
if(dis[p][gr[p2][v][i][0]][0] > c+gr[p2][v][i][1] ||(dis[p][gr[p2][v][i][0]][0] >= c+gr[p2][v][i][1] && k[dis[p][gr[p2][v][i][0]][1]][3] > gr[p2][v][i][2]))
{
pq.push({-1*(c+gr[p2][v][i][1]),gr[p2][v][i][0],p,p2});
dis[p][gr[p2][v][i][0]][0] = gr[p2][v][i][1]+c;
if(p2 == 0)
{
dis[p][gr[p2][v][i][0]][1] = kr[{v,gr[p2][v][i][0],gr[p2][v][i][1],gr[p2][v][i][2]}];
}
else
{
dis[p][gr[p2][v][i][0]][1] = kr[{gr[p2][v][i][0],v,gr[p2][v][i][1],gr[p2][v][i][2]}];
}
}
}
}
priority_queue<vector<long long>> pq2;
long long dis2[200];
void dk2(long long c,long long v)
{
for(int i = 0;i<gr[0][v].size();i++)
{
if(dis2[gr[0][v][i][0]] > c+gr[0][v][i][1])
{
pq2.push({-1*(c+gr[0][v][i][1]),gr[0][v][i][0]});
dis2[gr[0][v][i][0]] = c+gr[0][v][i][1];
}
}
}
void del()
{
for(int i = 0;i<200;i++)
{
dis2[i] = inf;
}
}
int main()
{
//ios_base::sync_with_stdio(0);
//cin.tie(0);
//cout.tie(0);
int n,m;
cin>>n>>m;
gr[0].resize(n);
gr[1].resize(n);
for(int i = 0;i<4;i++)
{
for(int j = 0;j<n;j++)
{
dis[i][j][0] = inf;
dis[i][j][1] = -1;
}
}
for(int i = 0;i<m;i++)
{
long long u,v,c,d;
cin>>u>>v>>c>>d;
u--;v--;
kr[{u,v,c,d}] = i;
gr[0][u].push_back({v,c,d});
gr[1][v].push_back({u,c,d});
k[i][0] = u;
k[i][1] = v;
k[i][2] = c;
k[i][3] = d;
}
pq.push({0,0,0,0});
pq.push({0,0,1,1});
pq.push({0,n-1,2,0});
pq.push({0,n-1,3,1});
while(!pq.empty())
{
long long a,b,c,d;
a = pq.top()[1];
b = pq.top()[0]*-1;
c = pq.top()[2];
d = pq.top()[3];
pq.pop();
dk(a,b,c,d);
}
for(int i = 0;i<4;i++)
{
for(int j = 0;j<n;j++)
{
// cout<<dis[i][j][1]<<" "<<i<<" "<<j<<"\n";
}
}
set<long long> sps;
for(int i = 0;i<2;i++)
{
for(int j = 1;j<n;j++)
{
if(dis[i][j][1] != -1)
{
sps.insert(dis[i][j][1]);
}
else
{
// cout<<i<<" "<<j<<"\n";
}
}
/*5 5
1 2 0 4
2 3 0 4
5 3 0 4
5 3 0 2
3 1 0 9*/
}
for(int i = 2;i<4;i++)
{
for(int j = 0;j<n-1;j++)
{
if(dis[i][j][1] != -1)
{
sps.insert(dis[i][j][1]);
//cout<<i<<" "<<j<<" "<<dis[i][j][1]<<" q2\n";
}
else if(i == 2 && j == 2)
{
//cout<<i<<" "<<j<<" "<<dis[i][j][1]<<" q\n";
}
}
}
//cout<<"\n";
//cout<<dis[0][n-1][0]<<" "<<dis[2][0][0]<<"\n";
long long ans = dis[0][n-1][0]+dis[2][0][0];
dis[2][n-1][0] = 0;
dis[3][n-1][0] = 0;
dis[0][0][0] = 0;
dis[1][0][0] = 0;
for(int i = 0;i<m;i++)
{
if(sps.find(i) == sps.end())
{
ans = min(ans,k[i][3]+min(dis[0][n-1][0],dis[0][k[i][1]][0]+k[i][2]+dis[3][k[i][0]][0])+min(dis[2][0][0],dis[2][k[i][1]][0]+k[i][2]+dis[1][k[i][0]][0]));
}
}
del();
//cout<<sps.size()<<" "<<ans<<"\n";
for(int i = 0;i<n;i++)
{
for(int j = 0;j<gr[0][i].size();j++)
{
if(sps.find(kr[{i,gr[0][i][j][0],gr[0][i][j][1],gr[0][i][j][2]}]) != sps.end())
{
long long cu = gr[0][i][j][0];
long long cans = gr[0][i][j][2];
// cout<<cans<<" "<<cu<<" "<<i<<" a\n";
gr[0][i][j][0] = i;
gr[0][cu].push_back({i,gr[0][i][j][1]});
pq2.push({0,0});
while(!pq2.empty())
{
long long a = pq2.top()[0]*-1,b = pq2.top()[1];
pq2.pop();
dk2(a,b);
}
cans += dis2[n-1];
// cout<<dis2[n-1]<<" f\n";
// cout<<cans<<" b\n" ;
del();
pq2.push({0,n-1});
while(!pq2.empty())
{
long long a = pq2.top()[0]*-1,b = pq2.top()[1];
pq2.pop();
dk2(a,b);
}
cans+=dis2[0];
// cout<<cans<<" j\n";
del();
gr[0][i][j][0] = cu;
gr[0][cu].pop_back();
ans = min(ans,cans);
}
}
}
if(ans >= inf)
{
cout<<-1;
}
else
{
cout<<ans;
}
}
