Problems
 
 
# Name    
A
standard input/output
2 s, 256 MB
Submit  x9586
B
standard input/output
2 s, 256 MB
Submit  x3756
C
standard input/output
2 s, 256 MB
Submit  x2903
D
standard input/output
3 s, 256 MB
Submit  x473
E
standard input/output
2 s, 256 MB
Submit  x240
Complete problemset
 
 
 
 
Questions about problems
 
 
  Question Answer
2016-12-17 19:57:19
Announcement
Problem B. Hongcow Solves A Puzzle
*****
Explanation for the 3-rd sample. In the third sample, we can shift the first tile by one to the right, and then compose the following rectangle: . . . . . . . X X . . . . . . . . . . . . . . . .
2016-12-17 19:50:12
Announcement
Problem B. Hongcow Solves A Puzzle
*****
The region is 4-connected if for any two cells X there is a path between them that uses only X cells and any two neighbouring cells of this path share a side.