n: 30 m: 251 packed: 10 density: 0 nodes: 0 solveTime: 6900 buildTime: 40 solved: true {0,6,15} {1,9,23} {2,19,27} {3,26,29} {4,11,18} {5,8,16} {7,24,28} {10,22,25} {12,14,17} {13,20,21}