3m 2 5m 3 m July 8, 2019 16 32 64 128 (- 3m 4 m 3 )-( 5m 2 m 4 5m 3 3m 2 m 7 3m 3 4m 2 5m 4 m 1 5m 3 4 3m 2 5 m 6 7 3m 3 4m 2 5m 18 m 2 3m 2 m 2 3 m
