x = gets.to_i

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