func Euler19() {

    var dayOfWeek = 3
    var month = 1
    var date = 1
    var year = 1901
    var count = 0
    for _ in 1...36525 {

        if dayOfWeek == 7 {
        dayOfWeek == 1
        }
        else  {
            dayOfWeek += 1
        }

        if month == 12 {
        month == 1
        }

        if date == 31 && (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10) {
        month += 1
        }
        else if date == 30 && (month == 4 || month == 6 || month == 9 || month == 11) {
            month += 1
        }
        else if date == 28 && month == 2 && year % 4 != 0 {
            month += 1
        }
        else if date == 29 && month == 2 && year % 4 == 0 {
            month += 1
        }
        else if date == 31 && month == 12 {
            month == 1
            year += 1
        }

        if dayOfWeek == 1 && month == 1 {
            count += 1
        }

        if year == 2000 && date == 31 && month == 12 {
            print(count)
            break
        }

    }

}

Euler19()