Score : $500$ points
We have a string $S$ of length $N$ consisting of 0
, $\ldots$, 9
, and a string $X$ of length $N$ consisting of A
and T
. Additionally, there is a string $T$, which is initialized to an empty string.
Takahashi and Aoki will play a game using these. The game consists of $N$ rounds. In the $i$-th round $(1\leq i \leq N)$, the following happens:
A
, Aoki does the operation below; if $X_i$ is T
, Takahashi does it.0
at the end of $T$.After $N$ operations, $T$ will be a string of length $N$ consisting of 0
, $\ldots$, 9
.
If $T$ is a multiple of $7$ 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.
0
, $\ldots$, 9
.A
and T
.Input is given from Standard Input in the following format:
$N$ $S$ $X$
If Takahashi wins when the two players play optimally, print Takahashi
; if Aoki wins, print Aoki
.
2 35 AT
Takahashi
In the $1$-st round, Aoki appends 3
or 0
at the end of $T$. In the $2$-nd round, Takahashi appends 5
or 0
at the end of $T$.
If Aoki appends 3
, Takahashi can append 5
to make $T$ 35
, a multiple of $7$.
If Aoki appends 0
, Takahashi can append 0
to make $T$ 00
, a multiple of $7$.
Thus, Takahashi can always win.
5 12345 AAAAT
Aoki
5 67890 TTTTA
Takahashi
5 12345 ATATA
Aoki