YES
O(n^2)
TRS:
 {
  minus(minus(x)) -> x,
      minus(h(x)) -> h(minus(x)),
   minus(f(x, y)) -> f(minus(y), minus(x))
 }
 DUP: We consider a non-duplicating system.
  Trs:
   {
    minus(minus(x)) -> x,
        minus(h(x)) -> h(minus(x)),
     minus(f(x, y)) -> f(minus(y), minus(x))
   }
  Matrix Interpretation:
   Interpretation class: triangular
       [X3]  [X1]    [1 0][X3]   [1 0][X1]   [0]
   [f]([X2], [X0]) = [0 1][X2] + [0 1][X0] + [2]
   
       [X1]    [1 0][X1]   [0]
   [h]([X0]) = [0 1][X0] + [2]
   
           [X1]    [1 1][X1]   [1]
   [minus]([X0]) = [0 1][X0] + [0]
   
   
   Qed