#include <iostream>
#include <queue>
#include <cstring>
#include <vector>
#include <algorithm>
using namespace std;
const int maxn = 1e5 + 10;
const int INF = 2e9;
vector<pair<pair<int, int>, int>> graph[maxn];
struct node {
    int idx, shortest_path, is_snow_only;
    node() {}
    node(int _idx, int _shortest_path, int _is_snow_only) {
        idx = _idx;
        shortest_path = _shortest_path;
        is_snow_only = _is_snow_only;
    }
    bool operator < (const node & tmp) const {
        return shortest_path > tmp.shortest_path;
    }
};
bool visited[maxn][2];
int main(){
    int n, m;
    cin >> n >> m;

    for(int i = 0; i < m; i++) {
        int a, b, c, d;
        cin >> a >> b >> c >> d;
        a--; b--;
        graph[a].push_back(make_pair(make_pair(b, c), d));
        graph[b].push_back(make_pair(make_pair(a, c), d));
    }

    memset(visited, false, sizeof visited);
    priority_queue<node> pq;
    pq.push(node(0, 0, 1));

    int res_shortest = 2e9, res_snow = -1;
    while(!pq.empty()) {
        node c = pq.top();
        pq.pop();

        if(c.idx == n - 1) {
            if(res_shortest > c.shortest_path) {
                res_shortest = c.shortest_path;
                res_snow = max(res_snow, c.is_snow_only);
            }
        }
        if(visited[c.idx][c.is_snow_only]) continue;
        visited[c.idx][c.is_snow_only] = true;

        for(int i = 0; i < (int) graph[c.idx].size(); i++) {
            int neighbour = graph[c.idx][i].first.first;
            int weight = graph[c.idx][i].first.second;
            int snow = graph[c.idx][i].second;

            int next_snow = min(snow, c.is_snow_only);
            if(!visited[neighbour][next_snow]) {
                pq.push(node(neighbour, c.shortest_path + weight, next_snow));
//                cout << neighbour << endl;
            }
        }
    }

    cout << res_shortest << endl;
    if(res_snow == 1) {
        cout << "DA" << endl;
    }
    else {
        cout << "NE" << endl;
    }
    return 0;
}