import java.io.*; import java.util.*; import java.text.*; class Solution { BufferedReader in; PrintStream out; void solve() throws Exception { int lines=0; String line; while ((line = in.readLine()) != null) { ++lines; } out.println(lines); } } public class count { public static void main(String[] args) throws Exception { Solution solution = new Solution(); solution.in = new BufferedReader(new InputStreamReader(System.in)); solution.out = System.out; solution.solve(); } }