NUM_ELVES = 2
NUM_STUDENTS = 2
NUM_TRACTORS = 2
NUM_OVENS = 2
NUM_TRUCKS = 2
NUM_COMPUTERS = 2
START_ELVES_GRAIN = 2
START_ELVES_COOKIES = 3
START_STUDENTS_COOKIES = 1
ELF_0  = elf_0_cf
ELF_1  = elf_1_cf
STUDENT_0  = student_0_cf
STUDENT_1  = student_1_cf