880
1
0
880
1
0
880
1
1
879
2
2
878
3
0
878
2
0
878
1
0
878
0
1
877
1
0
876
1
0
876
0
1
876
0
1
875
4
0
875
1
0
875
1
0
875
1
0
874
1
0
874
1
0
874
0
1
874
3
0
873
1
0
873
1
0
873
1
0
873
4
0
873
0
1
873
0
1
873
0
1
873
3
5
873
2
0
872
1
0
872
2
0
872
1
0
872
1
1
872
1
0
871
2
0
871
2
0
871
1
0
871
1
0
870
2
0
870
0
1
870
1
0
870
1
0
870
1
1
869
2
1
869
3
0
869
0
4
868
1
0
868
2
0