local mmi, mma = math.min, math.max
local n, x, y = io.read("*n", "*n", "*n")
local t = {}
for i = 1, x + 1 do
  t[i] = {}
  for j = 1, y + 1 do
    t[i][j] = 0
  end
end
for iz = 1, n do
  local a, b, c = io.read("*n", "*n", "*n")
  for i = x + 1 - a, 1, -1 do
    for j = y + 1 - b, 1, -1 do
      t[i + a][j + b] = mma(t[i + a][j + b], t[i][j] + c)
    end
  end
end
print(t[x + 1][y + 1])