s = gets.to_s

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