Training contest #3

Problems

Name Solved / Tries Average tries Average tries to solve
A Peragrams 4/6 (67%) 1.50 1.50
B Bits 2/5 (40%) 2.50 2.50
C Ladder 4/4 (100%) 1.00 1.00
D Single source shortest path, time table 0/0 (0%) -- --
E Sum Kind of Problem 4/5 (80%) 1.25 1.25
F Doorman 2/2 (100%) 1.00 1.00