1# Pugh's more elaborate example 2# 1 <= i 3# j <= n 4# 2i <= 3j 5#-------------- 6 73 5 81 1 0 0 -1 91 0 -1 1 0 101 -2 3 0 0 11 121 3 131 1 -1 14 15n 16Pugh's example 17