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