1c 2 30 2 4 50 6 73 8 91 100 2 11 120 0 0 13 141 150 2 16 170 0 0 18 191 202 3 211 1 0 221 -1 1 23 240 0 0 25 260 27 283 29 302 4 310 -1 0 0 # c1 = 0 320 0 -1 0 # c2 = 0 33 342 4 350 -1 0 1 # c1 = 1 360 0 -1 0 # c2 = 0 37 382 5 390 -1 0 1 0 # c1 = i 400 0 -1 0 1 # c2 = 1 41 420 43