lcs2_do.csproj

<Project Sdk="Microsoft.NET.Sdk">
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  <PropertyGroup>
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    <Optimize>True</Optimize>
    <GCStressIncompatible>true</GCStressIncompatible>
    <RequiresProcessIsolation>true</RequiresProcessIsolation>
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  <ItemGroup>
    <Compile Include="lcs2.cs" />
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</Project>