521
1811
2
0
520
1812
1
0
519
1814
0
0
518
1814
1
0
517
1815
2
0
516
1815
0
0
515
1816
0
0
514
1822
2
0
513
1824
1
0
512
1824
0
0
511
1827
0
0
510
1827
0
0
509
1829
0
0
508
1833
2
0
507
1838
2
0
506
1840
1
0
505
1843
0
0
504
1843
1
0
503
1848
0
0
502
1855
1
0
501
1861
2
0
500
1864
2
0
499
1869
1
0
498
1869
2
0
497
1871
2
0
496
1871
0
0
495
1872
0
0
494
1872
2
0
493
1872
0
0
492
1879
2
0