[ { "min_n": 1, "max_n": 1000, "min_m": 1, "max_m": 1000, "min_k": 2, "max_k": 1000, "ensure_solvable": true }, { "min_n": 1, "max_n": 1000000, "min_m": 1, "max_m": 1000000, "min_k": 2, "max_k": 1000000, "ensure_solvable": false }, { "min_n": 1, "max_n": 1000, "min_m": 1, "max_m": 1000, "min_k": 5, "max_k": 1000, "ensure_solvable": false }, { "min_n": 1, "max_n": 1000000, "min_m": 1, "max_m": 1000000, "min_k": 2, "max_k": 1000000, "ensure_solvable": true } ]