implicit none
integer:: n, i, j, a, b, count_1, count_2, count_3
integer,allocatable,dimension(:):: p

read(5,*) n

if (n == 25) then
    write(6,*) "Christmas"
else if (n == 24) then
    write(6,*) "Christmas Eve"
else if (n == 23) then
    write(6,*) "Christmas Eve Eve"
else 
    write(6,*) "Christmas Eve Eve Eve"
endif

end