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Welcome to Programming Challenges

This site is still in beta testing and several features are not yet completely stable. If you experience problems, please

(1) let us know by reporting them to revilla@mac.uva.es and
(2) test your submissions on the UVa Online Judge as well.

Some users have reported difficulties with Java, but C/C++ programs should work fairly reliably. Due to differences in compilers and operating systems, the two judges are not completely consistent, meaning that a program might get accepted by one judge but not the other. Do not feel too bad if the judge won't accept a program you are sure is correct, because it does not administer perfect justice. Do the best that you can and have fun with it!