length: 0, N: 10, acc: 1.0
length: 0, N: 20, acc: 0.975
length: 0, N: 30, acc: 0.975
length: 0, N: 40, acc: 0.975
length: 0, N: 50, acc: 0.95
length: 0, N: 60, acc: 0.775
length: 0, N: 70, acc: 0.825
length: 0, N: 80, acc: 0.675
length: 0, N: 90, acc: 0.675
length: 0, N: 100, acc: 0.6
length: 0, N: 110, acc: 0.65
length: 0, N: 120, acc: 0.65
length: 0, N: 130, acc: 0.45
length: 0, N: 140, acc: 0.3
length: 0, N: 150, acc: 0.25
