Problems for 2007 April 1 SnarkNews Contest

For all problems Time Limit=4 sec, Memory Limit=64Mb.

Problem Input filename Output filename Link on text
Problem A a.in a.out Problem text
Problem B b.in b.out Problem text
Problem C policie.in policie.out Problem text
Problem D d.in d.out Problem text
Problem E e.in e.out Problem text