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