mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    N = int(input())
    xyz = []
    for _ in range(N):
        a, b, c = map(int, input().split())
        xyz.append(sorted([a, b, c]))

    ans = 0
    for state in range(3**N):
        flg = [0] * N
        s = state
        for j in range(N):
            flg[j] = s % 3
            s //= 3
        xyz_tmp = []
        for i in range(N):
            x, y, z = xyz[i]
            if flg[i] == 0:
                xyz_tmp.append((x, y, z))
            elif flg[i] == 1:
                xyz_tmp.append((x, z, y))
            else:
                xyz_tmp.append((y, z, x))
        xyz_tmp.sort(key=lambda p: p[1], reverse=True)
        ok = 1
        for i in range(N-1):
            if xyz_tmp[i+1][0] > xyz_tmp[i][0]:
                ok = 0
                break
        if ok:
            cnt = 0
            for i in range(N):
                cnt += xyz_tmp[i][2]
            ans = max(ans, cnt)
    print(ans)


if __name__ == '__main__':
    main()