str = gets.to_s

if str == 'SUN'
    puts 7
elsif str == 'MON'
    puts 6
elsif str == 'TUE'
    puts 5
elsif str == 'WED'
    puts 4
elsif str == 'THU'
    puts 3
elsif str == 'FRI'
    puts 2
else
    puts 1
end
