YES
O(n^3)
TRS:
 {
  not(false()) -> true(),
   not(true()) -> false(),
      odd(0()) -> false(),
     odd(s(x)) -> not(odd(x)),
     +(x, 0()) -> x,
    +(x, s(y)) -> s(+(x, y)),
    +(s(x), y) -> s(+(x, y))
 }
 DUP: We consider a non-duplicating system.
  Trs:
   {
    not(false()) -> true(),
     not(true()) -> false(),
        odd(0()) -> false(),
       odd(s(x)) -> not(odd(x)),
       +(x, 0()) -> x,
      +(x, s(y)) -> s(+(x, y)),
      +(s(x), y) -> s(+(x, y))
   }
  Matrix Interpretation:
   Interpretation class: triangular
       [X5]  [X2]    [1 0 1][X5]   [1 1 1][X2]   [1]
   [+]([X4], [X1]) = [0 1 1][X4] + [0 0 1][X1] + [0]
       [X3]  [X0]    [0 0 1][X3]   [0 0 1][X0]   [0]
   
       [X2]    [1 0 0][X2]   [0]
   [s]([X1]) = [0 1 0][X1] + [1]
       [X0]    [0 0 1][X0]   [1]
   
         [0]
   [0] = [0]
         [1]
   
         [X2]    [1 1 1][X2]   [0]
   [odd]([X1]) = [0 0 1][X1] + [0]
         [X0]    [0 0 0][X0]   [0]
   
            [0]
   [true] = [1]
            [0]
   
         [X2]    [1 0 0][X2]   [1]
   [not]([X1]) = [0 1 0][X1] + [1]
         [X0]    [0 0 0][X0]   [0]
   
             [0]
   [false] = [0]
             [0]
   
   
   Qed