1st Day †

Problem A

Source: Mid-Central USA 2000
Problem Input Output

Problem B

Source: Mid-Central USA 1999
Problem Input Output

Problem C

Source: 2004 武市研プログラミングコンテスト
Problem Input Output

Problem D

Source: Southeast USA 1999
Problem Input Output

Problem E

Source: Tehran 1999
Problem Input Output

2nd Day †

Problems

Problem A

Source: South Pacific 2001
Input Output

Problem B

Source: Kanpur 2000
Input Output

Problem C

Source: Tehran 1999
Input and Output: 現在正しいファイルが泉の手元にありません．

Problem D

Source: Seoul 2000
Input Output

Problem E

Source: Mid-Central US 2000
Input Output

Problem F

Source: Seoul 2000
Input Output Judgement Program

Problem G

Source: Tehran 1999
Input Output

Problem H

Source: Crop Circles（Problem D of 1st Day）の改題
Input Output

3rd Day †

Problem A

Source: Southwestern European 1999
Problem Input Output

Problem B

Source: Southeast USA 1999
Problem Input Output

Problem C

Source: Southeast USA 1999
Problem Input Output

Problem D

Source: Southwestern European 1997
Problem Input Output

Problem E

Source: Southwestern European 1999
Problem Input Output

Problem F

Source: Manila 2002
Problem Input Output