N = int(input())

if 400 <= N <= 599: print(8)
elif 600 <= N <= 799: print(7)
elif 800 <= N <= 999: print(6)
elif 1000 <= N <= 1199: print(5)
elif 1200 <= N <= 1399: print(4)
elif 1400 <= N <= 1599: print(3)
elif 1600 <= N <= 1799: print(2)
elif 1800 <= N <= 1999: print(1)