sptensor
3
2 3 4
11
0 0 0 2.0
1 0 0 1.0
0 1 0 1.0
1 1 0 1.0
0 2 0 1.0
0 0 1 1.0
0 2 1 1.0
0 0 3 1.0
1 0 3 1.0
0 1 3 1.0
1 1 3 1.0
