new file:   USACO/2013/feb/Bronze/crossings.cpp
	new file:   USACO/2013/feb/Bronze/perimeter.cpp
	new file:   USACO/2013/feb/Bronze/relay.cpp
	new file:   USACO/2013/feb/Gold/partition.cpp
	new file:   USACO/2013/feb/Gold/route.cpp
	new file:   USACO/2013/feb/Gold/taxi.cpp
	new file:   USACO/2013/feb/Silver/msched.cpp
	new file:   USACO/2013/feb/Silver/perimeter.cpp
	new file:   USACO/2013/feb/Silver/tractor.cpp
	modified:   USACO/2013/jan/USACO 2013 jan.md