-- SAMPLE 1 -- 0 0 100 0 110 100 90 110 50 40 -- SAMPLE 2 -- 0 0 1000 0 500 200 500 300 500 400 500 500 500 600 500 700 500 800 500 900 500 1000 500 1100 -- SAMPLE 3 -- 0 0 1000 0 500 500 -100 100 -100 200 -100 300 -100 400 -100 500 -100 600 -100 700 -100 800 -100 900 -100 1000 1100 100 1100 200 1100 300 1100 400 1100 500 1100 600 1100 700 1100 800 1100 900 1100 1000 -- SAMPLE 4 -- 0 0 1000 0 0 400 200 400 400 400 600 400 800 400 1000 400 0 800 200 800 400 800 600 800 800 800 1000 800