call breakup
blip
call breakup
((PM,PY)3..4,PP,PA)2;
n: 4 m: 4
0 2 2 2 
2 0 ? 2 
2 ? 0 ? 
2 2 ? 0 

[PA, PP, PY, PM]
PY PM PA 1 (2,3,0)
PA PP PM 2 (0,1,3)
PY PM PP 1 (2,3,1)
PP PM PA 1 (1,3,0)
-- solve => no solution
-- 0[+0] millis.
-- 0[+0] nodes