import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.PrintWriter; public class Main { public static void main(String[] args) throws Exception { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String[] sa = br.readLine().split(" "); int n = Integer.parseInt(sa[0]); int m = Integer.parseInt(sa[1]); int n2 = n * 2; Point[] arr = new Point[n2]; for (int i = 0; i < n; i++) { sa = br.readLine().split(" "); Point p1 = new Point(); p1.x = Integer.parseInt(sa[0]); p1.y = Integer.parseInt(sa[1]); Point p2 = new Point(); p2.x = Integer.parseInt(sa[2]); p2.y = Integer.parseInt(sa[3]); arr[i] = p1; arr[i + n] = p2; } int[] a = new int[m]; int[] b = new int[m]; int[] c = new int[m]; int[] d = new int[m]; for (int i = 0; i < m; i++) { sa = br.readLine().split(" "); a[i] = Integer.parseInt(sa[0]) - 1; b[i] = Integer.parseInt(sa[1]); c[i] = Integer.parseInt(sa[2]) - 1; d[i] = Integer.parseInt(sa[3]); } br.close(); double inf = 1e18; double[][] dist = new double[n2][n2]; for (int i = 0; i < n2; i++) { for (int j = i + 1; j < n2; j++) { boolean flg = true; for (int k = 0; k < n; k++) { if (i % n != k && j % n != k) { if (cross(arr[i], arr[j], arr[k], arr[k + n])) { flg = false; break; } } } if (flg) { dist[i][j] = Math.hypot(arr[i].x - arr[j].x, arr[i].y - arr[j].y); } else { dist[i][j] = inf; } dist[j][i] = dist[i][j]; } } for (int k = 0; k < n2; k++) { for (int i = 0; i < n2; i++) { for (int j = 0; j < n2; j++) { if (dist[i][k] != inf && dist[k][j] != inf) { dist[i][j] = Math.min(dist[i][j], dist[i][k] + dist[k][j]); } } } } PrintWriter pw = new PrintWriter(System.out); for (int i = 0; i < m; i++) { int p1 = a[i]; if (b[i] == 2) { p1 += n; } int p2 = c[i]; if (d[i] == 2) { p2 += n; } pw.println(dist[p1][p2]); } pw.flush(); } static boolean cross(Point a, Point b, Point c, Point d) { // AB-C long s1 = (long) (a.x - b.x) * (c.y - a.y) - (long) (a.y - b.y) * (c.x - a.x); // AB-D long t1 = (long) (a.x - b.x) * (d.y - a.y) - (long) (a.y - b.y) * (d.x - a.x); if (s1 > 0 && t1 > 0 || s1 < 0 && t1 < 0) { return false; } // CD-A long s2 = (long) (c.x - d.x) * (a.y - c.y) - (long) (c.y - d.y) * (a.x - c.x); // CD-B long t2 = (long) (c.x - d.x) * (b.y - c.y) - (long) (c.y - d.y) * (b.x - c.x); if (s2 > 0 && t2 > 0 || s2 < 0 && t2 < 0) { return false; } if (s1 == 0 && t1 == 0 && s2 == 0 && t2 == 0) { int ax = Math.min(a.x, b.x); int bx = Math.max(a.x, b.x); int ay = Math.min(a.y, b.y); int by = Math.max(a.y, b.y); int cx = Math.min(c.x, d.x); int dx = Math.max(c.x, d.x); int cy = Math.min(c.y, d.y); int dy = Math.max(c.y, d.y); // D < A || B < C if (dx < ax || dy < ay || bx < cx || by < cy) { return false; } return true; } else { return true; } } static class Point { int x, y; } }