import java.util.Arrays;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int count = 1;
		String[] s = new String[n];
		for(int i = 0; i < n; i++) {
			s[i] = sc.next();
		}
		Arrays.sort(s);
		for (int i = 0; i < s.length - 1; i++) {
			if (!s[i].equalsIgnoreCase(s[i + 1])) {
				count++;
			}
		}
		System.out.println(count);
	}
} import java.util.Arrays; Arrays java.util import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int count = 1;
		String[] s = new String[n];
		for(int i = 0; i < n; i++) {
			s[i] = sc.next();
		}
		Arrays.sort(s);
		for (int i = 0; i < s.length - 1; i++) {
			if (!s[i].equalsIgnoreCase(s[i + 1])) {
				count++;
			}
		}
		System.out.println(count);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int count = 1;
		String[] s = new String[n];
		for(int i = 0; i < n; i++) {
			s[i] = sc.next();
		}
		Arrays.sort(s);
		for (int i = 0; i < s.length - 1; i++) {
			if (!s[i].equalsIgnoreCase(s[i + 1])) {
				count++;
			}
		}
		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int count = 1;
		String[] s = new String[n];
		for(int i = 0; i < n; i++) {
			s[i] = sc.next();
		}
		Arrays.sort(s);
		for (int i = 0; i < s.length - 1; i++) {
			if (!s[i].equalsIgnoreCase(s[i + 1])) {
				count++;
			}
		}
		System.out.println(count);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int count = 1; count 1 String[] s = new String[n]; s new String[n] n for(int i = 0; i < n; i++) {
			s[i] = sc.next();
		} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
			s[i] = sc.next();
		} {
			s[i] = sc.next();
		} s[i] = sc.next() s[i] s i sc.next() sc.next sc Arrays.sort(s) Arrays.sort Arrays s for (int i = 0; i < s.length - 1; i++) {
			if (!s[i].equalsIgnoreCase(s[i + 1])) {
				count++;
			}
		} int i = 0; int i = 0; i 0 i < s.length - 1 i s.length - 1 s.length s s.length 1 i++ i++ i {
			if (!s[i].equalsIgnoreCase(s[i + 1])) {
				count++;
			}
		} {
			if (!s[i].equalsIgnoreCase(s[i + 1])) {
				count++;
			}
		} if (!s[i].equalsIgnoreCase(s[i + 1])) {
				count++;
			} !s[i].equalsIgnoreCase(s[i + 1]) s[i].equalsIgnoreCase(s[i + 1]) s[i].equalsIgnoreCase s[i] s i s[i + 1] s i + 1 i 1 {
				count++;
			} count++ count System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int count = 1;
		String[] s = new String[n];
		for(int i = 0; i < n; i++) {
			s[i] = sc.next();
		}
		Arrays.sort(s);
		for (int i = 0; i < s.length - 1; i++) {
			if (!s[i].equalsIgnoreCase(s[i + 1])) {
				count++;
			}
		}
		System.out.println(count);
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int count = 1;
		String[] s = new String[n];
		for(int i = 0; i < n; i++) {
			s[i] = sc.next();
		}
		Arrays.sort(s);
		for (int i = 0; i < s.length - 1; i++) {
			if (!s[i].equalsIgnoreCase(s[i + 1])) {
				count++;
			}
		}
		System.out.println(count);
	}
} Main
import java.util.Arrays;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int count = 1;
		String[] s = new String[n];
		for(int i = 0; i < n; i++) {
			s[i] = sc.next();
		}
		Arrays.sort(s);
		for (int i = 0; i < s.length - 1; i++) {
			if (!s[i].equalsIgnoreCase(s[i + 1])) {
				count++;
			}
		}
		System.out.println(count);
	}
}
