
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Replace the letters $I, K, S$ with digits such that the following subtraction is correct:

\[ \begin{array}{c@{}c@{}c@{}c}
  & K & I & S \\
- & S & I & K \\
\hline
  & S & K & I \\
\end{array} \]

Present the answer in LaTex format: \boxed{Your answer}
user