package main

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

func main() {
	var n, m int
	scanIntVariables(&n, &m)
	ans := 0
	for i := 0; i < n; i++ {
		var s, rr string
		scanStringVariables(&s, &rr)
		r, _ := strconv.Atoi(rr)
		if r < 1200 {
			continue
		}
		if strings.Contains(s[0:4], "x") {
			ans++
		}
	}
	writeLine(ans)
}

var _stdInReader = bufio.NewReader(os.Stdin)

func readLine() string {
	line, _ := _stdInReader.ReadString('\n')
	return strings.TrimSpace(line)
}

func readString() string {
	return readLine()
}

func readInt() int {
	strs := readString()
	num, _ := strconv.Atoi(strs)
	return num
}

func readLong() int64 {
	strs := readString()
	num, _ := strconv.ParseInt(strs, 10, 64)
	return num
}

func readStrings() []string {
	line := readLine()
	return strings.Split(line, " ")
}

func readInts() []int {
	strs := readStrings()
	arr := make([]int, len(strs))
	for i := 0; i < len(strs); i++ {
		arr[i], _ = strconv.Atoi(strs[i])
	}
	return arr
}

func readLongs() []int64 {
	strs := readStrings()
	arr := make([]int64, len(strs))
	for i := 0; i < len(strs); i++ {
		arr[i], _ = strconv.ParseInt(strs[i], 10, 64)
	}
	return arr
}

func readDoubles() []float64 {
	strs := readStrings()
	arr := make([]float64, len(strs))
	for i := 0; i < len(strs); i++ {
		arr[i], _ = strconv.ParseFloat(strs[i], 64)
	}
	return arr
}

func scanStringVariables(args ...*string) {
	n := len(args)
	scanned := 0
	for n > scanned {
		inputSlice := readStrings()
		m := len(inputSlice)
		if m == 0 || m > n-scanned {
			fmt.Print("Something wrong in scanStringVariables !!!")
			return
		}
		for i := 0; i < m; i++ {
			*args[i+scanned] = inputSlice[i]
		}
		scanned += m
	}
}

func scanIntVariables(args ...*int) {
	n := len(args)
	scanned := 0
	for n > scanned {
		inputSlice := readInts()
		m := len(inputSlice)
		if m == 0 || m > n-scanned {
			fmt.Printf("m %d n %d scanned %d. ", m, n, scanned)
			fmt.Print("Something wrong in scanIntVariables !!!")
			return
		}
		for i := 0; i < m; i++ {
			*args[i+scanned] = inputSlice[i]
		}
		scanned += m
	}
}

func scanLongVariables(args ...*int64) {
	n := len(args)
	scanned := 0
	for n > scanned {
		inputSlice := readLongs()
		m := len(inputSlice)
		if m == 0 || m > n-scanned {
			fmt.Print("Something wrong in scanIntVariables !!!")
			return
		}
		for i := 0; i < m; i++ {
			*args[i+scanned] = inputSlice[i]
		}
		scanned += m
	}
}

func write(arg ...interface{})                 { fmt.Print(arg...) }
func writeLine(arg ...interface{})             { fmt.Println(arg...) }
func writeFormat(f string, arg ...interface{}) { fmt.Printf(f, arg...) }