A - Clock Patiente
B - Street Directions
C - Run
D - Lining Up
E - Software Allocation
F - Il Gioco dell'X

problems at the UVA ONLINE JUDGE numbers:

A - 170 http://online-judge.uva.es/p/v1/170.html
B - 610 http://online-judge.uva.es/p/v6/610.html
C - 347 http://online-judge.uva.es/p/v3/347.html
D - 270 http://online-judge.uva.es/p/v2/270.html
E - 259 http://online-judge.uva.es/p/v2/259.html
F - 260 http://online-judge.uva.es/p/v2/260.html

Resolvidos:

OK - A - Clock Patiente - nike
OK - B - Street Directions - grafos ( encontrar componentes biconexos + pontes )
OK - C - Run - backtraking
OK - D - Lining Up - geométrico (n˛ log n)  para cada ponto, mapear os vetores num map (mdc)
OK - E - Software Allocation - bipartite matching
OK - F - Il Gioco dell'X - nike