let X = Int(readLine()!)!
if X <= 599 {
    print(8)
} else if X <= 799 {
    print(7)
} else if X <= 999 {
    print(6)
}else if X <= 1199 {
    print(5)
}else if X <= 1399 {
    print(4)
}else if X <= 1599 {
    print(3)
}else if X <= 1799 {
    print(2)
}else if X <= 1999 {
    print(1)
}
