// parameter "input" gets all data
function Main(data) {
  	let input = Number(data)
	if(input>=400 || input<=599){
    	console.log(8)
    }else if(input>=600 || input<=799){
    	console.log(7)
	}else if(input>=800 || input<=999){
    	console.log(6)
	}else if(input>=1000 || input<=1199){
    	console.log(5)
	}else if(input>=1200 || input<=1399){
    	console.log(4)
	}else if(input>=1400 || input<=1599){
    	console.log(3)
	}else if(input>=1600 || input<=1799){
    	console.log(2)
	}else if(input>=1800 || input<=1999){
    	console.log(1)
	}
}
// Don't edit this line!
Main(require("fs").readFileSync("/dev/stdin", "utf8"));