s = gets.chomp

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
    puts 1
end