Multiple key$-$value pairs, each representing a room number and temperature, are read from input and added to room$\_$temperatures$1.$ First, merge room$\_$temperatures$2$ with room$\_$temperatures$1.$ Then, clear room$\_$temperatures$1.$

Click here for exampleEx: If the input is:

$2278\mathrm{.}95497\mathrm{.}7$ end

then the output is:

Room temperatures $1$: $\{\}$ Room temperatures $2$: $\{\text{'}609\text{'}$: $\text{'}5\mathrm{.}4\text{'},\text{'}227\text{'}$: $\text{'}8\mathrm{.}9\text{'},\text{'}549\text{'}$: $\text{'}7\mathrm{.}7\text{'}\}$

room$\_$temperatures$2=\{\text{'}609\text{'}$: $\text{'}5\mathrm{.}4\text{'}\}$

ref$\_$record$1=$ room$\_$temperatures$1$ # For testing purposes, ref$\_$record$1$ references room$\_$temperatures$1$

ref$\_$record$2=$ room$\_$temperatures$2$ # For testing purposes, ref$\_$record$2$ references room$\_$temperatures$2$

input$\_$line $=$ input$()$

while input$\_$line $!=$ 'end':

room, temperature $=$ input$\_$line.split$()$

room$\_$temperatures$1[$room$]=$ temperature

input$\_$line $=$ input$()$

room$\_$temperatures$1.$update$($room$\_$temperatures$2)$

room$\_$temperatures$1.$clear$()$

print$(\text{'}$Room temperatures $1$:$\text{'})$

print$($room$\_$temperatures$1)$

print$(\text{'}$Room temperatures $2$:$\text{'})$

print$($room$\_$temperatures$2)$