Google Code Jam 2012 Round 1B

	#	제목
A1	12388	Safety in Numbers (Small)
A2	12389	Safety in Numbers (Large)
B1	12390	Tide Goes In, Tide Goes Out (Small)
B2	12391	Tide Goes In, Tide Goes Out (Large)
C1	12392	Equal Sums (Small)
C2	12393	Equal Sums (Large)