N, X, Y = map(int, input().split())
ABC = [list(map(int,  input().split())) for _ in range(N)]
dp = [[[-1 for _ in range(Y+1)] for _ in range(X+1)] for _ in range(N+1)]
dp[0][0][0] = 0
for i in range(N):
    for x in range(X+1):
        for y in range(Y+1):
            if dp[i][x][y]<0:
                continue
            dp[i+1][x][y] = max(dp[i+1][x][y], dp[i][x][y])
            a, b, c = ABC[i]
            if x+a<=X and y+b<=Y:
                dp[i+1][x+a][y+b] = max(dp[i+1][x+a][y+b], dp[i][x][y]+c)
ans = -1
for x in range(X+1):
    for y in range(Y+1):
        ans = max(ans, dp[N][x][y])
print(ans)