Welcome to Codebreaker!

Codebreaker is the official platform for Singapore Informatics Olympiad training and contests. We have run selection for the International Olympiad in Informatics for the delegations of Singapore and Indonesia, as well as countless official national and school training programmes.

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Problem Users
flamethrower 10
fuji 10
helloworld 9
candies3 9
exponentiate 8

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greenbeans 91
lunchbox 24
fibo 22
waveway6 22
flamethrower 17