atcoder#ABC195E. [ABC195E] Lucky 7 Battle
[ABC195E] Lucky 7 Battle
Score : points
Problem Statement
We have a string of length consisting of 0
, , 9
, and a string of length consisting of A
and T
. Additionally, there is a string , which is initialized to an empty string.
Takahashi and Aoki will play a game using these. The game consists of rounds. In the -th round , the following happens:
- If is
A
, Aoki does the operation below; if isT
, Takahashi does it. - Operation: append or
0
at the end of .
After operations, will be a string of length consisting of 0
, , 9
.
If is a multiple of as a base-ten number (after removing leading zeros), Takahashi wins; otherwise, Aoki wins.
Determine the winner of the game when the two players play optimally.
Constraints
- and have a length of each.
- consists of
0
, ,9
. - consists of
A
andT
.
Input
Input is given from Standard Input in the following format:
Output
If Takahashi wins when the two players play optimally, print Takahashi
; if Aoki wins, print Aoki
.
2
35
AT
Takahashi
In the -st round, Aoki appends 3
or 0
at the end of . In the -nd round, Takahashi appends 5
or 0
at the end of .
If Aoki appends 3
, Takahashi can append 5
to make 35
, a multiple of .
If Aoki appends 0
, Takahashi can append 0
to make 00
, a multiple of .
Thus, Takahashi can always win.
5
12345
AAAAT
Aoki
5
67890
TTTTA
Takahashi
5
12345
ATATA
Aoki