# lambda's
50 5
# u1
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
# u2
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0