added disjoint-set, mst, dijkstra
	new file:   UVA/10048.cpp
	new file:   UVA/10369.cpp
	new file:   UVA/10397.cpp
	new file:   UVA/10600.cpp
	new file:   UVA/10759.cpp
	new file:   UVA/10773.cpp
	new file:   UVA/10986.cpp
	new file:   UVA/11228.cpp
	new file:   UVA/11264.cpp
	new file:   UVA/11553.cpp
	new file:   UVA/11565.cpp
	new file:   UVA/11631.cpp
	new file:   UVA/11747.cpp
	new file:   UVA/11827.cpp
	new file:   UVA/12442.cpp
	new file:   UVA/12455.cpp
	new file:   UVA/524.cpp
added KahanSummation