package main

import (
	"bufio"
	"fmt"
	"os"
	"strings"
)

var in string

func main() {
	fmt.Scanf("%s", &in)
	sum := 0
	in := bufio.NewScanner(os.Stdin)
	for in.Scan() {
		if checkPassphrase(in.Text()) {
			sum++
		}
	}
	fmt.Println(sum)
}

func checkPassphrase(d string) bool {
	//fmt.Println(d)
	words := strings.Split(d, " ")
	for i, e := range words {
		if i > 0 {
			//fmt.Println(i, e)
			for _, f := range words[0:i] {
				//fmt.Println(e, f)
				if f == e {
					return false
				}
			}
		}
	}
	return true
}