Luke Skrzypek - Submission #2

Luke Skrzypek Submission/1 - Python/RomanNumeralsPython.py

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+import sys
+def F(n,c): 
+    return((((c[::2],c[1]+c[0]*(n-5))[n<9]),c[:2])[n==4],c[0]*n)[n<4]
+for s in open(sys.argv[1]):
+    n=int(s)
+    print(n//1000*'M'+F(n//100%10,'CDM')+F(n//10%10,'XLC')+F(n%10,'IVX'))

Luke Skrzypek Submission/2 - Javascript/RomanNumerals.js

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+o=require('fs')
+F=(n,f,i,d)=>n<4?f.repeat(n):n==4?f+i:n<9?i+f.repeat(n-5):f+d
+o.readFileSync(process.argv[2],'utf8').split('\n').forEach(x=>n=-(-x)
+console.log('M'.repeat(n/1e3|0)+F(n/100%10|0,'C','D','M')+F(n/10%10|0,'X','L','C')+F(n%10|0,'I','V','X')))

Luke Skrzypek Submission/3 - C#/Program.cs

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+using S=string;var F=(int n,char f,char i,S d)=>n<4?new S(f,n):n==4?$"{f}{i}":n<9?i+new S(f,n-5):d;File.ReadAllText(args[0]).Split('\n').ToList().ForEach(l=>{var n=int.Parse(l);Console.WriteLine($"{new S('M',n/1000)}{F(n/100%10,'C','D',"CM")}{F(n/10%10,'X','L',"XC")}{F(n%10,'I','V',"IX")}");});

Luke Skrzypek Submission/3 - C#/RomanNumerals.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

Luke Skrzypek Submission/README.md

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+This includes all three of my attempts with the main one (shortest) being the one in `1- Python`.
+The others have been included for posterity :) 
+
+1) Python: `python RomanNumeralsPython.py <file>` - 185 chars without spaces
+2) Javascript: `node RomanNumerals.js <file>` - 251 chars without spaces
+3) C#: `dotnet build RomanNumerals.csproj` - 288 chars without spaces