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

dp = [[[-1 for _ in range(W+1)] for _ in range(W+1)] for _ in range(N+1)]
dp[0][0][0] = 0

for i in range(N):
    t, w, v = stones[i]
    for j in range(W+1):
        for k in range(W+1):
            if dp[i][j][k] == -1:
                continue
            if j + w <= W and abs(j + w - k) <= D:
                dp[i+1][j+w][k+t] = max(dp[i+1][j+w][k+t], dp[i][j][k] + v)
            if k + w <= W and abs(j - k - w) <= D:
                dp[i+1][j+t][k+w] = max(dp[i+1][j+t][k+w], dp[i][j][k] + v)

answer = 0
for j in range(W+1):
    for k in range(W+1):
        if abs(j - k) <= D:
            answer = max(answer, dp[N][j][k])

print(answer)