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Compile$-$Time Error at st$.$Push$(1\mathrm{.}1)$

Compile$-$Time Error at st$.$Push$(\text{'}$z$\text{'})$

Compile$-$Time Error at st$.$Push$("$Hello$")$

$1$

$1\mathrm{.}1$

z

Hello

Hello

$z$

$1,1$

$1$

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