RETEA
0 1
4
1 73 218 0 0
2 274 95 0 0
3 275 313 0 0
4 473 207 0 0
1 4
2 1 0 0 0 2
1 2 0 0 0 0
1 3 0 0 0 1
2 3 0 0 0 1
2 4 0 0 0 1
3 1 0 0 0 3
3 2 0 0 0 2
4 3 0 0 0 5