PS3 - NP-hard 2+Flows 1

Problems

Name Solved / Tries Average tries Average tries to solve
A Shopping 35/325 (11%) 8.33 8.46
B Programming Team Selection 33/175 (19%) 4.38 4.39
C Jupiter Orbiter 32/181 (18%) 5.17 5.25
D Cops and Robbers 33/155 (21%) 3.97 3.09