1# 0 <= i <= P 2# 0 <= j <= 2i+Q 3# 0 <= k <= i-P+R 4# 0 <= P,Q,R 5#---------------- 6 7# i j k P Q R cte 86 8 91 1 0 0 0 0 0 0 # i >= 0 101 -1 0 0 1 0 0 0 # i <= P 111 0 1 0 0 0 0 0 # j >= 0 121 2 -1 0 0 1 0 0 # j <= 2i+Q 131 0 0 1 0 0 0 0 # k >= 0 141 1 0 -1 -1 0 1 0 # k <= i-P+R 15 163 5 171 1 0 0 0 181 0 1 0 0 191 0 0 1 0 20