from Algorithm Practical Skill Test
- Second Algorithm Practical Skills Test PAST2.
 - Second Algorithm Practical Skills Test - AtCoder
 
D
- Only a few thousand cases even if made naively because of the small size.
 
E
- It is a directed graph with no confluence
 - Find the least common multiple for the period of a cycle
 
F
- Always make the best choice at the time.
 
G
- 
Just put the letter and length pair in deque
 - 
PAST2H AC
 - 
PAST2I AC
 - 
PAST2J AC
 - 
PAST2K noSub
 - 
PAST2L noSub
 - 
PAST2M noSub
 - 
PAST2N noSub
 - 
PAST2O noSub
 
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