import java.time.LocalDate

fun main(args: Array<String>) {
    p492()
}

fun p492() {
    var date = LocalDate.of(2015, 1, 1)
    var answer = 0
    
    while (date.year==2015){
        if (date.monthValue==date.dayOfMonth/10+date.dayOfMonth%10) answer++
        date=date.plusDays(1)
    }

    println(answer)
}