#k = (m+1)*(n-m+1) = nm-mm+m+n-m+1 = nm-mm+n+1
#dk/dm = n-2m

n=gets.to_i

m1 = n/2
m2 = (n+1)/2

k1 = (m1+1)*(n-m1+1)-1
k2 = (m2+1)*(n-m2+1)-1

p [k1,k2].max%((1e6+7).to_i)