rewrite [Int.abs_eq_natAbs]
G : Type ?u.55607
f : ℤ → ℤ
bound : ℕ
h_bound : AlmostAdditive f bound
m : ℕ
h : f ↑m > ↑bound * 2
h_fm_nonneg : ↑(|f ↑m|) = f ↑m
n : ℕ
⊢ abs (f (n • ↑m)) ≥ Int.subNatNat ((|f ↑m| - bound) * n) bound
G : Type ?u.55607
f : ℤ → ℤ
bound : ℕ
h_bound : AlmostAdditive f bound
m : ℕ
h : f ↑m > ↑bound * 2
h_fm_nonneg : ↑(|f ↑m|) = f ↑m
n : ℕ
⊢ ↑(|f (n • ↑m)|) ≥ Int.subNatNat ((|f ↑m| - bound) * n) bound