50
1 2 3 4 5 6 7 8 9 10 -100 -9 -8 -7 -6 -5 -4 -3 -2 -1 100 1000 -100 -1000 50 1 2 3 4 5 6 7 8 976 10 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 100 1000 -100 -1000 50 
100 1000 999 998 997 996 950 -500 300 200 100 1000 999 998 997 996 950 -500 300 200 100 1000 499 998 997 996 150 -500 300 200 100 1000 999 998 997 996 950 -500 300 200 100 1000 999 998 997 996 950 -500 300 200