Right now I have in computer programming competitions:
International Olympiad in Informatics:
-IOI 1998 problems and solutions
-IOI 1997 problems
-IOI 1996 problems
United States of America Computing Olympiad:
-USACO 1998 fall championship problems
-USACO 1997 fall championship problems
-USACO 1997 winter championship problems
-USACO 1997 spring championship problems
-USACO 1997 national championship problems
-USACO 1996 fall championship problems
-USACO 1996 winter championship problems
-USACO 1996 spring championship problems
-USACO 1996 national championship problems
-USACO 1995 fall championship problems
-USACO 1995 winter championship problems
-USACO 1995 spring championship problems
-USACO 1995 national championship problems
Canadian Computing Competition:
-CCC 1998 round 1
-CCC 1997 round 1
-CCC 1997 round 2
-CCC 1996 round 1