function Main(input) {
	input = input.split("\n");
	
	var a = parseInt(input[0], 10);
	
	if  (400 <= a && a < 600) {
	var result = 8;
	
	} else if (600 <= a && a < 800) {
	var result = 7;

	
	} else if (800 <= a && a < 1000) {
	var result = 6;

	
	} else if (1000 <= a && a < 1200) {
	var result = 5;

	
	} else if (1200 <= a && a < 1400) {
	var result = 4;

	
	} else if (1400 <= a && a < 1600) {
	var result = 3;

	
	} else if (1600 <= a && a < 1800) {
	var result = 2;

	
	} else if (1800 <= a && a < 2000) {
	var result = 1;

	
	} else {
	}
	
	
	
	console.log(result);
	}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));
