PKU Preseason Exercise for Beginners 4 (Reusing existing problems)

Contest - PKU Preseason Exercise for Beginners 4 (Reusing existing problems)

Start time: 2007-04-22 13:00:00 End time: 2007-04-22 18:00:00
Current System Time: 2025-01-25 03:51:48.933 Contest Status: Ended

Problem ID	Title
2041 Problem A	Unreliable Message
2042 Problem B	Lagrange's Four-Square Theorem
2043 Problem C	Area of Polygons
2044 Problem D	Weather Forecast
2045 Problem E	Molecular Formula
2046 Problem F	Gap
2047 Problem G	Concert Hall Scheduling
2048 Problem H	Monster Trap