The exercise style is European. The payoff of these options is: $$ \begin{align*} c &= \min(\max(S^i - K, 0), C) \\ p &= \min(\max(K - S^i, 0), C) \end{align*} $$ where $K$ is the strike, $i$ is the power ($i > 0$), $C$ is the cap ($C > 0$) and $S$ is the spot.
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