/bound-variable

My solutions to the 2006 ICFP Programming Contest (The Cult of the Bound Variable)

Primary LanguageC

The Cult of the Bound Variable

Solutions to the 2006 ICFP Programming Contest.

Warning: spoilers below!

Universal Machine

The Universal Machine is implemented in src/um.c. Compile it with make and run it on a UM program:

./um sandmark.umz # benchmark
./um codex.umz

Benchmark times:

# time ./um sandmark.umz
# without optimization
./um sandmark.umz  86.20s user 0.00s system 99% cpu 1:26.20 total
# with -O3
./um sandmark.umz  30.06s user 0.00s system 99% cpu 30.065 total

Get the next program:

echo '(\\b.bb)(\\v.vv)06FHPVboundvarHRAk\np' | ./um codex.umz > codex_output
tail -c +196 codex_output > umix.um

QVICKBASIC

The fixed program is in hack.bas. We find the passwords of ohmega and howie.

Passwords found

userpassword
ohmegabidirectional
howiexyzzy
ftdfalderal90
hmonkCOMEFROM

Publications found

INTRO.LOG=200@999999|35e6f52e9bc951917c73af391e35e1d
INTRO.MUA=5@999999|b9666432feff66e528a17fb69ae8e9a
INTRO.UMD=10@999999|7005f80d6cd9b7b837802f1e58b11b8
INTRO.QBC=10@999999|e6ee9c98b80b4dd04814a29a37bcba8
INTRO.OUT=5@999999|69ca684f8c787cfe06694cb26f74a95
BASIC.MLC=100@999999|8f8f7b233a9deb154cbcd5314b8e930
ADVTR.INC=5@999999|f95731ab88952dfa4cb326fb99c085f
ADVTR.CMB=5@999999|764e8a851411c66106e130374d8abbb