from itertools import accumulate, product
from math import inf
import sys

from math import inf
from typing import Callable, Generic, Sequence, TypeVar


def printe(*args, end="\n", **kwargs):
    print(*args, end=end, file=sys.stderr, **kwargs)


def main():
    N, W, D = map(int, input().split())
    stones = [list(map(int, input().split())) for _ in range(N)]

    type_0_dp_table = [-inf for _ in range(W + 1)]
    type_1_dp_table = [-inf for _ in range(W + 1)]
    type_0_dp_table[0] = 0
    type_1_dp_table[0] = 0
    for idx in range(N):
        for c_w in reversed(range(W + 1)):
            if c_w + stones[idx][1] <= W:
                if stones[idx][0] == 0:
                    type_0_dp_table[c_w + stones[idx][1]] = max(
                        type_0_dp_table[c_w + stones[idx][1]],
                        type_0_dp_table[c_w] + stones[idx][2]
                    )
                else:
                    type_1_dp_table[c_w + stones[idx][1]] = max(
                        type_1_dp_table[c_w + stones[idx][1]],
                        type_1_dp_table[c_w] + stones[idx][2]
                    )

    max_value = 0
    for type_0_w, type_1_w in product(range(W + 1), repeat=2):
        if type_0_w + type_1_w > W:
            continue
        if abs(type_0_w - type_1_w) > D:
            continue
        max_value = max(
            max_value,
            type_0_dp_table[type_0_w] + type_1_dp_table[type_1_w]
        )
    print(max_value)


if __name__ == "__main__":
    main()