n: 30 m: 451 packed: 10 density: 0 nodes: 0 solveTime: 134100 buildTime: 120 solved: true {0,3,19} {1,2,12} {4,26,29} {5,13,25} {6,9,20} {7,18,21} {8,14,15} {10,22,28} {11,17,23} {16,24,27}