proc getchar_unlocked():char {. importc:"getchar_unlocked",header: "<stdio.h>" .}
proc scan(): int =
  while true:
    let k = getchar_unlocked()
    if k < '0': break
    result = 10 * result + k.ord - '0'.ord

const MOD = 1000000007
let n = scan()
var ans = 1
for i in 1..n:
  ans = ans * i
  ans = ans mod MOD
  ans = ans * (2 * i - 1)
  ans = ans mod MOD
echo ans