package main

import (
	"fmt"
	"strconv"
	"time"
)

func sumDay(d int) int {
	ret := 0
	s := strconv.Itoa(d)
	for _, v := range s {
		i, _ := strconv.Atoi(string(v))
		ret += i
	}
	return ret
}

func resolve() int {
	ret := 0
	t, _ := time.Parse("2006-01-02", "2015-01-01")
	for t.Year() == 2015 {
		if sumDay(t.Day()) == int(t.Month()) {
			ret += 1
		}
		t = t.AddDate(0, 0, 1)
	}
	return ret
}

func main() {
	fmt.Println(resolve())
}