
input = gets

key = ['SUN','MON','TUE','WED','THU','FRI','SAT']

if input == key[0] then
    puts 7
elsif input == key[1] then
    puts 6
elsif input == key[2] then
    puts 5
elsif input == key[3] then
    puts 4
elsif input == key[4] then
    puts 3
elsif input == key[5] then
    puts 2
elsif input == key[6] then
    puts 1
end