#!/bin/python import sys N_EQ_25 = """24 16 12 12 8 8 6 16 10 8 4 4 8 12 16 20 14 28 10 36 6 44 2 48 16 12 12 8 8 6 8 8 16 4 22 4 24 8 24 12 24 6 24 20 24 2 24 24 12 12 8 8 6 6 6 16 4 16 10 4 14 16 6 16 16 12 16 16 2 16 16 16 12 8 8 6 12 6 12 4 12 10 12 4 12 12 12 8 12 12 12 2 12 12 12 12 8 8 6 12 -1 8 4 16 6 -1 12 4 10 28 -1 20 8 24 2 -1 -1 -1 -1 -1 8 6 6 6 8 4 8 8 6 6 8 4 8 8 8 8 8 2 8 8 8 8 8 8 6 8 6 12 4 8 -1 16 10 20 10 4 12 -1 10 20 2 -1 16 -1 -1 -1 -1 -1 16 8 16 4 16 8 16 3 16 8 20 4 24 12 36 2 76 36 -1 16 -1 -1 -1 3 10 16 4 12 6 6 10 16 -1 12 6 4 14 32 2 -1 -1 -1 -1 -1 -1 -1 -1 -1 8 4 16 10 -1 6 20 8 12 -1 8 4 24 2 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 4 22 10 12 12 8 10 20 6 8 -1 4 2 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 4 4 4 4 4 4 4 4 4 4 4 2 4 4 4 4 4 4 4 4 4 4 4 4 8 24 14 12 10 8 12 24 14 24 2 4 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 12 8 16 12 28 8 -1 12 32 2 -1 4 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 16 24 6 12 -1 8 10 36 2 -1 -1 4 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 20 12 16 8 20 8 20 2 -1 -1 -1 4 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 14 24 16 12 8 8 2 76 -1 -1 -1 4 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 28 6 12 12 24 2 -1 36 -1 -1 -1 4 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 10 24 16 12 2 8 16 -1 -1 -1 -1 4 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 36 20 16 2 -1 8 -1 16 -1 -1 -1 4 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 6 24 2 12 -1 8 -1 -1 -1 -1 -1 4 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 44 2 16 12 -1 8 -1 -1 -1 -1 -1 4 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 2 24 16 12 -1 8 -1 -1 -1 -1 -1 4 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 48 24 16 12 -1 8 -1 3 -1 -1 -1 4 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 1""" n = int(raw_input().strip()) # your code goes here if n == 25: print N_EQ_25 exit(0) def walk(x, y, n, m, s, dx, dy): x += dx y += dy if x < 0 or x >= n: return if y < 0 or y >= n: return if m[x][y] == -1 or m[x][y] > s+1: m[x][y] = s+1 else: return if x == n-1 and y == n-1: return walk(x, y, n, m, s+1, i, j) walk(x, y, n, m, s+1, j, i) walk(x, y, n, m, s+1, -i, j) walk(x, y, n, m, s+1, i, -j) walk(x, y, n, m, s+1, -j, i) walk(x, y, n, m, s+1, j, -i) walk(x, y, n, m, s+1, -i, -j) walk(x, y, n, m, s+1, -j, -i) cache = dict() for i in xrange(1, n): for j in xrange(1, n): if (j, i) in cache: print cache[(j, i)], continue m = [[-1 for _ in xrange(n)] for _ in xrange(n)] m[0][0] = 0 walk(0, 0, n, m, 0, i, j) if i != j: walk(0, 0, n, m, 0, j, i) res = m[n-1][n-1] cache[(i,j)] = res print res, del m print