croce

def croce(A,i,j):
#@param A: matrix of numbers
#@param i : int
#@param j: int
#@return bool
  h = len(A) #altezza matrice
  w = len(A[0]) #larghezza matrice
  check = 0

  if (i-1 < 0) or (A[i][j]>A[i-1][j]):
    check+=1

  if (i+1>=h) or (A[i][j]>A[i+1][j]):
    check+=1

  if (j-1<0) or (A[i][j]>A[i][j-1]):
    check+=1

  if (j+1>=w) or (A[i][j]>A[i][j+1]):
    check+=1

  if check == 4:
    return True
  else:
    return False