1,7,7
7,7
,p1,p2,p3,p4,u!,,
,,,,,1,,MAX
,7,4,-1,,-1,>=,0
,-1,3,1,8,-1,>=,0
,-2,2,,1,-1,>=,0
,5,3,1,2,-1,>=,0
,-3,3,5,-2,-1,>=,0
,1,1,1,1,,=,1


