diff --git a/AdventOfCode2022.vcxproj b/AdventOfCode2022.vcxproj
index 974ec14..cbb3a08 100644
--- a/AdventOfCode2022.vcxproj
+++ b/AdventOfCode2022.vcxproj
@@ -127,6 +127,31 @@
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diff --git a/AdventOfCode2022.vcxproj.filters b/AdventOfCode2022.vcxproj.filters
index 4173ad4..114ae7b 100644
--- a/AdventOfCode2022.vcxproj.filters
+++ b/AdventOfCode2022.vcxproj.filters
@@ -18,6 +18,81 @@
Source Files
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diff --git a/src/aoc2022.h b/src/aoc2022.h
index 2c9a62d..338e495 100644
--- a/src/aoc2022.h
+++ b/src/aoc2022.h
@@ -10,12 +10,13 @@ struct SDay {
SDay(std::string);
~SDay();
- virtual Output part1() const {};
- virtual Output part2() const {};
+ virtual Output part1() const = 0;
+ virtual Output part2() const = 0;
};
template
SDay