n: 30 m: 309 packed: 10 density: 0 nodes: 0 solveTime: 1940 buildTime: 60 solved: true {0,2,4} {1,24,26} {3,5,20} {6,10,28} {7,8,29} {9,11,22} {12,15,25} {13,14,21} {16,18,27} {17,19,23}