[ { "min_n": 1, "max_n": 200000, "d_prob": 0.3 }, { "min_n": 200, "max_n": 50000, "d_prob": 0.6 }, { "min_n": 5, "max_n": 1000, "d_prob": 0.5 }, { "min_n": 10, "max_n": 5000, "d_prob": 0.7 } ]