N, W, D = map(int, input().split())
twv = [map(int, input().split()) for _ in range(N)]
wv = [[], []]
for t, w, v in twv:
    wv[t].append((w, v))

dp = [[0] + [float("-inf")]*W for _ in range(2)]
for t in range(2):
    for w, v in wv[t]:
        update = dp[t].copy()
        for i in range(W+1-w):
            update[i+w] = max(update[i+w], dp[t][i] + v)
        dp[t] = update

ans = 0
for i in range(W+1):
    for j in range(W+1):
        if i+j <= W and abs(i-j) <= D:
            ans = max(ans, dp[0][i] + dp[1][j])
print(ans)