
Grading System
The Tournament of the Towns system of grading, following
the tradition of Mathematical Olympiads, is based on using the
following symbols (marks).
+  for any correct solution. 
+.  for a mainly correct solution with small defects (trivial correction/corrections is needed ). 
+  for a solution with an essential flaw, which could be easily eliminated (basically, problem is solved). 
+/2  for a correct solution of one part the problem (if the problem splits naturally into two parts); for a correct idea, not developed enough to consider the problem solved completely. 
+  for a mainly incorrect solution; however, with an essential advancement/advancements. 
.  for an incorrect solution with some reasonable arguments. 
  for a wrong solution. 
0  for a problem not attempted. 
!  is added to a mark + if the solution contains an original approach (short, but concise presentation, comprehensiveness, straightness of the result,..) 
 
  