package main

import "fmt"

func main() {
	var n,a int
	fmt.Scan(&n)
	for ;n>0;n-- {
		m:=map[string]bool{}
		for i:=0;i<4;i++ {
			var s string
			fmt.Scan(&s)
			m[s]=true
		}
		amou:=m["akai"]&&m["marui"]&&m["okii"]&&m["umai"]
		if amou {
			a++
		}
	}
	fmt.Println(a)
}