import Foundation

let rating = Int(readLine()!)!

switch rating {
    case 400...599: print(8)
    case 600...799: print(7)
    case 800...999: print(6)
    case 1000...1199: print(5)
    case 1200...1399: print(4)
    case 1400...1599: print(3)
    case 1600...1799: print(2)
    case 1800...1999: print(1)
    default: fatalError()
}
