Solve issue #149 big knapsack

New file:   Makefile
New file:   answer.cc
New file:   input
New file:   input2
New file:   input3
New file:   input4
New file:   input5
New file:   input6
New file:   output
New file:   output2
New file:   output3
New file:   output4
New file:   output5
New file:   output6
Merge pull request #154 from ie-ProCon/issue#149_big_knapsack_kanpe

Issue#149 big knapsack kanpe