package yukicoder; import java.util.Scanner; import java.util.List; import java.util.ArrayList; public class No1473_2 { private static class Q { int i; int d; public Q(int i, int d) { this.i = i; this.d = d; } } private static int n; private static List> V; public static void main(String[] args) { Scanner scan = new Scanner(System.in); n = scan.nextInt(); int m = scan.nextInt(); V = new ArrayList>(); for (int i = 0; i < n; i++) { V.add(new ArrayList()); } int max_d = 0; int min_d = Integer.MAX_VALUE; for (int i=0; i < m; i++) { int s = scan.nextInt() - 1; int t = scan.nextInt() - 1; int d = scan.nextInt(); V.get(s).add(new Q(t, d)); V.get(t).add(new Q(s, d)); max_d = Math.max(max_d, d); min_d = Math.min(min_d, d); } scan.close(); Q l = new Q(min_d - 1, 0), r = new Q(max_d + 1, 0); while (r.i - l.i > 1) { int mid = (r.i + l.i) / 2; int c = bfs(mid); if (c == 0) { r.i = mid; r.d = 0; } else { l.i = mid; l.d = c; } } System.out.println(String.format("%d %d", l.i,l.d)); } private static int bfs(int w) { boolean[] B = new boolean[n]; List q = new ArrayList(); q.add(new Q(0, 0)); B[0] = true; while (q.size() > 0) { Q v = q.remove(0); if (v.i == n-1) { return v.d; } B[v.i] = true; for (Q i : V.get(v.i)) { if (i.d >= w && !B[i.i]) { q.add(new Q (i.i, v.d + 1)); } } } return 0; } }