package main

import (
	"fmt"
	"time"
)

func main() {
	t := time.Date(2015, 1, 1, 0, 0, 0, 0, time.UTC)

	ans := 0
	for t.Year() == 2015 {
		if int(t.Month()) == t.Day()/10+t.Day()%10 {
			ans++
		}
		t = t.AddDate(0, 0, 1)
	}
	fmt.Println(ans)
}