WHY

@echo off & setlocal enabledelayedexpansion
if "%~1" == "arg" (
    for /f "tokens=1-4*" %%m in (1.txt) do (
        echo;%%o %%p %%m%%n %%q
    )
    goto :eof
)
for /f "tokens=1-3*" %%m in ('"%~f0" arg ^| sort ^& echo;/') do (
    if /i "%%m %%n" NEQ "!s1!" (
        if defined s1 (echo;!s1! !s2!)
        set "s1=%%m %%n"
    )
    set "s2=%%p"
)
pause
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gawk "{s=$3\" \"$4; if(!Max[s]||Max[s]<$1$2){Max[s]=$1$2; arr[s]=$5}}END{for(i in arr)print i\" \"arr[i]}" 1.txt
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(gc 1.txt -ReadCount 0) | sort | group{($_ -split '(楼层：\d+\s+房间：\S+)')[1]} | %{([array]$_.Group)[-1] -replace '.+(?=楼层：)'}
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