from math import sqrt, pow
n, x1, y1, x2, y2 = list(map(int, input().split(' ')))
r = abs(x1 - x2)
c = abs(y1 - y2)
if r == n or c == n:
res = x1 + x2 + y1 + y2
else:
res = r + c
print(min(res, 4 * n - res))
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