diff --git a/day01/.gitignore b/day01/.gitignore
index 0023a53..58e82a2 100644
--- a/day01/.gitignore
+++ b/day01/.gitignore
@@ -6,3 +6,8 @@ DerivedData/
 .swiftpm/configuration/registries.json
 .swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
 .netrc
+
+build/
+*.3dsx
+*.elf
+*.smdh
diff --git a/day01/Makefile b/day01/Makefile
new file mode 100644
index 0000000..39745be
--- /dev/null
+++ b/day01/Makefile
@@ -0,0 +1,246 @@
+#---------------------------------------------------------------------------------
+.SUFFIXES:
+#---------------------------------------------------------------------------------
+
+ifeq ($(strip $(DEVKITARM)),)
+$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
+endif
+
+TOPDIR ?= $(CURDIR)
+include $(DEVKITARM)/3ds_rules
+
+#---------------------------------------------------------------------------------
+# TARGET is the name of the output
+# BUILD is the directory where object files & intermediate files will be placed
+# SOURCES is a list of directories containing source code
+# DATA is a list of directories containing data files
+# INCLUDES is a list of directories containing header files
+# GRAPHICS is a list of directories containing graphics files
+# GFXBUILD is the directory where converted graphics files will be placed
+#   If set to $(BUILD), it will statically link in the converted
+#   files as if they were data files.
+#
+# NO_SMDH: if set to anything, no SMDH file is generated.
+# ROMFS is the directory which contains the RomFS, relative to the Makefile (Optional)
+# APP_TITLE is the name of the app stored in the SMDH file (Optional)
+# APP_DESCRIPTION is the description of the app stored in the SMDH file (Optional)
+# APP_AUTHOR is the author of the app stored in the SMDH file (Optional)
+# ICON is the filename of the icon (.png), relative to the project folder.
+#   If not set, it attempts to use one of the following (in this order):
+#     - <Project name>.png
+#     - icon.png
+#     - <libctru folder>/default_icon.png
+#---------------------------------------------------------------------------------
+TARGET		:=	$(notdir $(CURDIR))
+BUILD		:=	build
+SOURCES		:=	source
+DATA		:=	data
+INCLUDES	:=	include
+GRAPHICS	:=	gfx
+GFXBUILD	:=	$(BUILD)
+#ROMFS		:=	romfs
+#GFXBUILD	:=	$(ROMFS)/gfx
+APP_TITLE   := Hello Swift
+APP_DESCRIPTION := Built with Embedded Swift, devkitARM & libctru
+APP_AUTHOR  := Dmitry Serov
+
+#---------------------------------------------------------------------------------
+# options for code generation
+#---------------------------------------------------------------------------------
+ARCH	:=	-march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft
+
+# There used to be -mword-allocations here but swiftc doesn't like it
+# I removed it and it works but may break something later...
+CFLAGS	:=	-g -Wall -O2 \
+			-ffunction-sections \
+			$(ARCH)
+
+CFLAGS	+=	$(INCLUDE) -D__3DS__
+
+CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
+
+ASFLAGS	:=	-g $(ARCH)
+LDFLAGS	=	-specs=3dsx.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)
+
+LIBS	:= -lctru -lm
+
+#---------------------------------------------------------------------------------
+# list of directories containing libraries, this must be the top level containing
+# include and lib
+#---------------------------------------------------------------------------------
+LIBDIRS	:= $(CTRULIB)
+
+#---------------------------------------------------------------------------------
+# swift-specific bits
+#---------------------------------------------------------------------------------
+SWIFTC := ~/.local/share/swiftly/bin/swiftc
+SWIFTFLAGS := -wmo -parse-as-library -enable-experimental-feature Embedded   \
+			  -target armv6-none-none-eabi -import-objc-header ../$(INCLUDES)/BridgingHeader.h \
+			  -I $(DEVKITPRO)/devkitARM/include -I $(DEVKITPRO)/devkitARM/arm-none-eabi/include
+%.o: %.swift
+	@echo $(notdir $<)
+	$(ADD_COMPILE_COMMAND) add $(SWIFTC) $(SWIFTFLAGS) "$(addprefix -Xcc , $(C_FLAGS)) -c $< -o $@" $<
+	$(SILENTCMD)$(SWIFTC) $(SWIFTFLAGS) $(addprefix -Xcc , $(CFLAGS)) -c $< -o $@ $(ERROR_FILTER)
+
+#---------------------------------------------------------------------------------
+# no real need to edit anything past this point unless you need to add additional
+# rules for different file extensions
+#---------------------------------------------------------------------------------
+ifneq ($(BUILD),$(notdir $(CURDIR)))
+#---------------------------------------------------------------------------------
+
+export OUTPUT	:=	$(CURDIR)/$(TARGET)
+export TOPDIR	:=	$(CURDIR)
+
+export VPATH	:=	$(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
+			$(foreach dir,$(GRAPHICS),$(CURDIR)/$(dir)) \
+			$(foreach dir,$(DATA),$(CURDIR)/$(dir))
+
+export DEPSDIR	:=	$(CURDIR)/$(BUILD)
+
+CFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
+CPPFILES	:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
+SFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
+SWIFTFILES  := 	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.swift)))
+PICAFILES	:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.v.pica)))
+SHLISTFILES	:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.shlist)))
+GFXFILES	:=	$(foreach dir,$(GRAPHICS),$(notdir $(wildcard $(dir)/*.t3s)))
+BINFILES	:=	$(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
+
+#---------------------------------------------------------------------------------
+# use CXX for linking C++ projects, CC for standard C
+#---------------------------------------------------------------------------------
+ifeq ($(strip $(CPPFILES)),)
+#---------------------------------------------------------------------------------
+	export LD	:=	$(CC)
+#---------------------------------------------------------------------------------
+else
+#---------------------------------------------------------------------------------
+	export LD	:=	$(CXX)
+#---------------------------------------------------------------------------------
+endif
+#---------------------------------------------------------------------------------
+
+#---------------------------------------------------------------------------------
+ifeq ($(GFXBUILD),$(BUILD))
+#---------------------------------------------------------------------------------
+export T3XFILES :=  $(GFXFILES:.t3s=.t3x)
+#---------------------------------------------------------------------------------
+else
+#---------------------------------------------------------------------------------
+export ROMFS_T3XFILES	:=	$(patsubst %.t3s, $(GFXBUILD)/%.t3x, $(GFXFILES))
+export T3XHFILES		:=	$(patsubst %.t3s, $(BUILD)/%.h, $(GFXFILES))
+#---------------------------------------------------------------------------------
+endif
+#---------------------------------------------------------------------------------
+
+export OFILES_SOURCES 	:=	$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o) $(SWIFTFILES:.swift=.o)
+
+export OFILES_BIN	:=	$(addsuffix .o,$(BINFILES)) \
+			$(PICAFILES:.v.pica=.shbin.o) $(SHLISTFILES:.shlist=.shbin.o) \
+			$(addsuffix .o,$(T3XFILES))
+
+export OFILES := $(OFILES_BIN) $(OFILES_SOURCES)
+
+export HFILES	:=	$(PICAFILES:.v.pica=_shbin.h) $(SHLISTFILES:.shlist=_shbin.h) \
+			$(addsuffix .h,$(subst .,_,$(BINFILES))) \
+			$(GFXFILES:.t3s=.h)
+
+export INCLUDE	:=	$(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
+			$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
+			-I$(CURDIR)/$(BUILD)
+
+export LIBPATHS	:=	$(foreach dir,$(LIBDIRS),-L$(dir)/lib)
+
+export _3DSXDEPS	:=	$(if $(NO_SMDH),,$(OUTPUT).smdh)
+
+ifeq ($(strip $(ICON)),)
+	icons := $(wildcard *.png)
+	ifneq (,$(findstring $(TARGET).png,$(icons)))
+		export APP_ICON := $(TOPDIR)/$(TARGET).png
+	else
+		ifneq (,$(findstring icon.png,$(icons)))
+			export APP_ICON := $(TOPDIR)/icon.png
+		endif
+	endif
+else
+	export APP_ICON := $(TOPDIR)/$(ICON)
+endif
+
+ifeq ($(strip $(NO_SMDH)),)
+	export _3DSXFLAGS += --smdh=$(CURDIR)/$(TARGET).smdh
+endif
+
+ifneq ($(ROMFS),)
+	export _3DSXFLAGS += --romfs=$(CURDIR)/$(ROMFS)
+endif
+
+.PHONY: all clean
+
+#---------------------------------------------------------------------------------
+all: $(BUILD) $(GFXBUILD) $(DEPSDIR) $(ROMFS_T3XFILES) $(T3XHFILES)
+	@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
+
+$(BUILD):
+	@mkdir -p $@
+
+ifneq ($(GFXBUILD),$(BUILD))
+$(GFXBUILD):
+	@mkdir -p $@
+endif
+
+ifneq ($(DEPSDIR),$(BUILD))
+$(DEPSDIR):
+	@mkdir -p $@
+endif
+
+#---------------------------------------------------------------------------------
+clean:
+	@echo clean ...
+	@rm -fr $(BUILD) $(TARGET).3dsx $(OUTPUT).smdh $(TARGET).elf $(GFXBUILD)
+
+#---------------------------------------------------------------------------------
+$(GFXBUILD)/%.t3x	$(BUILD)/%.h	:	%.t3s
+#---------------------------------------------------------------------------------
+	@echo $(notdir $<)
+	@tex3ds -i $< -H $(BUILD)/$*.h -d $(DEPSDIR)/$*.d -o $(GFXBUILD)/$*.t3x
+
+#---------------------------------------------------------------------------------
+else
+
+#---------------------------------------------------------------------------------
+# main targets
+#---------------------------------------------------------------------------------
+$(OUTPUT).3dsx	:	$(OUTPUT).elf $(_3DSXDEPS)
+
+$(OFILES_SOURCES) : $(HFILES)
+
+$(OUTPUT).elf	:	$(OFILES)
+
+#---------------------------------------------------------------------------------
+# you need a rule like this for each extension you use as binary data
+#---------------------------------------------------------------------------------
+%.bin.o	%_bin.h :	%.bin
+#---------------------------------------------------------------------------------
+	@echo $(notdir $<)
+	@$(bin2o)
+
+#---------------------------------------------------------------------------------
+.PRECIOUS	:	%.t3x %.shbin
+#---------------------------------------------------------------------------------
+%.t3x.o	%_t3x.h :	%.t3x
+#---------------------------------------------------------------------------------
+	$(SILENTMSG) $(notdir $<)
+	$(bin2o)
+
+#---------------------------------------------------------------------------------
+%.shbin.o %_shbin.h : %.shbin
+#---------------------------------------------------------------------------------
+	$(SILENTMSG) $(notdir $<)
+	$(bin2o)
+
+-include $(DEPSDIR)/*.d
+
+#---------------------------------------------------------------------------------------
+endif
+#---------------------------------------------------------------------------------------
diff --git a/day01/Package.swift b/day01/Package.swift
deleted file mode 100644
index 784c33c..0000000
--- a/day01/Package.swift
+++ /dev/null
@@ -1,15 +0,0 @@
-// swift-tools-version: 6.2
-// The swift-tools-version declares the minimum version of Swift required to build this package.
-
-import PackageDescription
-
-let package = Package(
-    name: "day01",
-    targets: [
-        // Targets are the basic building blocks of a package, defining a module or a test suite.
-        // Targets can depend on other targets in this package and products from dependencies.
-        .executableTarget(
-            name: "day01"
-        ),
-    ]
-)
diff --git a/day01/Sources/day01/day01.swift b/day01/Sources/day01/day01.swift
deleted file mode 100644
index ff9efe4..0000000
--- a/day01/Sources/day01/day01.swift
+++ /dev/null
@@ -1,90 +0,0 @@
-// The Swift Programming Language
-// https://docs.swift.org/swift-book
-
-@main
-struct day01 {
-    static func parseInput(_ input: [StaticString]) -> [(Direction, Int)] {
-        input.map({ line in
-            let turns = line.withUTF8Buffer { tmp in
-                atoi(str: [UInt8](tmp.dropFirst()))
-            }
-            return (Direction(line.utf8Start[0]), turns)
-        })
-    }
-
-    static func part1(_ input: [(Direction, Int)]) {
-        var cur = 50
-        var count = 0
-        for (dir, num) in input {
-            cur = switch dir {
-                case .Left: (cur - num) % 100
-                case .Right: (cur + num) % 100
-            }
-            if (cur < 0) { cur += 100 }
-            if (cur == 0) { count += 1 }
-        }
-        print("Part 1: \(count)")
-    }
-
-    static func part2(_ input: [(Direction, Int)]) {
-        var cur = 50
-        var count = 0
-        for (dir, num) in input {
-            let start = cur
-            let fullCycles = num - (num % 100)
-            count += fullCycles / 100
-
-            cur = switch dir {
-                case .Left: (cur - num) % 100
-                case .Right: (cur + num) % 100
-            }
-            if (cur < 0) { cur += 100 }
-
-            switch dir {
-                case .Left:
-                    if (start - (num % 100)) < 0 && start != 0 {
-                        count += 1
-                    }
-                case .Right:
-                    if (start + (num % 100)) >= 100 && start != 0 && cur != 0 {
-                        count += 1
-                    }
-            }
-            if (cur == 0) { count += 1 }
-        }
-        print("Part 2: \(count)")
-    }
-
-    static func main() {
-        let parsed = parseInput(realInput)
-        part1(parsed)
-        part2(parsed)
-    }
-
-    static func atoi(str: [UInt8]) -> Int {
-        var result = 0
-
-        for char in str {
-            if char >= 0x30 && char <= 0x39 {
-                result = result * 10 + (Int(char) - 0x30)
-            } else {
-                break
-            }
-        }
-
-        return result
-    }
-}
-
-enum Direction {
-    case Left
-    case Right
-
-    init(_ char: UInt8) {
-        self = switch char {
-            case 0x4c: Direction.Left
-            case 0x52: Direction.Right
-            default: fatalError()
-        }
-    }
-}
diff --git a/day01/include/BridgingHeader.h b/day01/include/BridgingHeader.h
new file mode 100644
index 0000000..84ecfc5
--- /dev/null
+++ b/day01/include/BridgingHeader.h
@@ -0,0 +1,7 @@
+#include <3ds.h>
+#include <stdio.h>
+
+static inline void gspWaitForVBlankWrapper(void) {
+    gspWaitForVBlank();
+}
+
diff --git a/day01/Sources/day01/input.swift b/day01/source/day01.swift
similarity index 91%
rename from day01/Sources/day01/input.swift
rename to day01/source/day01.swift
index 3183b4f..a040fad 100644
--- a/day01/Sources/day01/input.swift
+++ b/day01/source/day01.swift
@@ -1,3 +1,119 @@
+@main
+struct Day01 {
+    static func main() {
+        gfxInitDefault()
+
+        consoleInit(GFX_TOP, nil)
+
+        let parsed = parseInput(realInput)
+        //print("\(parsed[0].0.rawValue) \(parsed[0].1)")
+        part1(parsed)
+        part2(parsed)
+
+        // Main loop
+        while aptMainLoop() {
+            // Scan all the inputs. This should be done once for each frame
+            hidScanInput()
+
+            // hidKeysDown returns information about which buttons have been just pressed (and they weren't in the previous frame)
+            let kDown = hidKeysDown()
+
+            if kDown & KEY_START != 0 {
+                break // break in order to return to hbmenu
+            }
+
+            // Flush and swap framebuffers
+            gfxFlushBuffers()
+            gfxSwapBuffers()
+
+            // Wait for VBlank
+            gspWaitForVBlankWrapper()
+        }
+
+        gfxExit()
+    }
+
+    static func parseInput(_ input: [StaticString]) -> [(Direction, Int)] {
+        input.map({ line in
+            let turns = line.withUTF8Buffer { tmp in
+                atoi(str: [UInt8](tmp.dropFirst()))
+            }
+            return (Direction(line.utf8Start[0]), turns)
+        })
+    }
+
+    static func part1(_ input: [(Direction, Int)]) {
+        var cur = 50
+        var count = 0
+        for (dir, num) in input {
+            cur = switch dir {
+                case .Left: (cur - num) % 100
+                case .Right: (cur + num) % 100
+            }
+            if (cur < 0) { cur += 100 }
+            if (cur == 0) { count += 1 }
+        }
+        print("Part 1: \(count)")
+    }
+
+    static func part2(_ input: [(Direction, Int)]) {
+        var cur = 50
+        var count = 0
+        for (dir, num) in input {
+            let start = cur
+            let fullCycles = num - (num % 100)
+            count += fullCycles / 100
+
+            cur = switch dir {
+                case .Left: (cur - num) % 100
+                case .Right: (cur + num) % 100
+            }
+            if (cur < 0) { cur += 100 }
+
+            switch dir {
+                case .Left:
+                    if (start - (num % 100)) < 0 && start != 0 {
+                        count += 1
+                    }
+                case .Right:
+                    if (start + (num % 100)) >= 100 && start != 0 && cur != 0 {
+                        count += 1
+                    }
+            }
+            if (cur == 0) { count += 1 }
+        }
+        print("Part 2: \(count)")
+    }
+
+    static func atoi(str: [UInt8]) -> Int {
+        var result = 0
+
+        for char in str {
+            if char >= 0x30 && char <= 0x39 {
+                result = result * 10 + (Int(char) - 0x30)
+            } else {
+                break
+            }
+        }
+
+        return result
+    }
+}
+
+
+enum Direction: Int {
+    case Left = 0
+    case Right = 1
+
+    init(_ char: UInt8) {
+        self = switch char {
+            case 0x4c: Direction.Left
+            case 0x52: Direction.Right
+            default: fatalError()
+        }
+    }
+}
+
 public let testInput: [StaticString] = [
 "L68",
 "L30",
diff --git a/day01/source/shims.c b/day01/source/shims.c
new file mode 100644
index 0000000..a15f95e
--- /dev/null
+++ b/day01/source/shims.c
@@ -0,0 +1,18 @@
+#include <stdlib.h>
+#include <malloc.h>
+#include <errno.h>
+
+int posix_memalign(void **res, size_t align, size_t len) {
+    if (align < sizeof(void *)) return 22;
+    void *mem = memalign(align, len);
+    if (!mem) return errno;
+    *res = mem;
+    return 0;
+}
+
+int getentropy(void *buffer, size_t length) {
+    for (int i = 0; i < length; i++) {
+        ((int*)buffer)[i] = rand();
+    }
+    return 0;
+}