diff --git a/.gitignore b/.gitignore
index c49ac75..9080a4e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,5 +11,7 @@ user/*
 user/*.o
 
 .idea
+cmake-build-debug
+CMakeLists.txt
 __pycache__
 res.txt
diff --git a/Makefile b/Makefile
index 6a758c8..ad10ed3 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ endif
 CFLAGS = -fno-pic -ffreestanding -static -fno-builtin -fno-strict-aliasing \
 		 -mno-sse \
 		 -I. \
-		 -Wall -ggdb -m32 -Werror -fno-omit-frame-pointer -Os
+		 -Wall -Wno-unused-result -ggdb -m32 -Werror -fno-omit-frame-pointer -Os
 CFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
 ASMFLAGS = -m32 -ffreestanding -c -g -I.
 
@@ -141,4 +141,4 @@ clean:
 	rm -f *.elf *.img *.bin *.raw *.o */*.o tools/mkfs ejudge.sh
 
 tools/%: tools/%.c
-	gcc -Wall -Werror -g $^ -o $@
+	gcc -Wall -Wno-unused-result -Werror -g $^ -o $@
diff --git a/drivers/port.h b/drivers/port.h
index 5d2174a..ff032d7 100644
--- a/drivers/port.h
+++ b/drivers/port.h
@@ -20,6 +20,7 @@ static inline void port_word_out(unsigned short port, unsigned short data) {
     asm volatile("outw %%ax, %%dx" : : "a" (data), "d" (port));
 }
 
+/* assembler-long, not c-long */
 static inline void port_long_out(unsigned short port, unsigned int data) {
     asm volatile("outl %%eax, %%dx" : : "a" (data), "d" (port));
 }
diff --git a/drivers/uart.c b/drivers/uart.c
index 613567f..bd12573 100644
--- a/drivers/uart.c
+++ b/drivers/uart.c
@@ -37,6 +37,7 @@ uartputc(char c)
 
     if (!uart)
         return;
+    /* What is that *skeleton emoji*? */
     for (i = 0; i < 128 && !(port_byte_in(COM1+5) & 0x20); i++) {
         asm("pause");
     }
diff --git a/drivers/vga.c b/drivers/vga.c
index 8b70fde..c31dcea 100644
--- a/drivers/vga.c
+++ b/drivers/vga.c
@@ -4,7 +4,7 @@
 
 static char* const video_memory = (char*) (KERNBASE + 0xb8000);
 
-enum colors16 {
+enum colors16 : unsigned char {
     black = 0,
     blue,
     green,
diff --git a/fs/fs.h b/fs/fs.h
index a67d569..a78d936 100644
--- a/fs/fs.h
+++ b/fs/fs.h
@@ -31,6 +31,7 @@ struct dirent {
 	char name[20];
 };
 
+/* This way we have 512 bytes (1 sector) per dir */
 struct dir {
 	char reserved[32];
 	struct dirent entries[ents_in_dir];
diff --git a/lib/bribki.h b/lib/bribki.h
new file mode 100644
index 0000000..0e6354c
--- /dev/null
+++ b/lib/bribki.h
@@ -0,0 +1,21 @@
+#pragma once
+
+#include <stdint.h>
+
+/* Bribki are stored here */
+
+typedef struct {
+  char chars[5];
+} DebugBribka;
+
+DebugBribka byte_to_string_bribka(uint8_t byte) {
+  DebugBribka res = {.chars = {' ', ' ', ' ', ' ', 0}};
+  int p = 3;
+  while (byte > 0) {
+    uint8_t d = byte % 10;
+    byte /= 10;
+    res.chars[p] = (char)(d) + '0';
+    p--;
+  }
+  return res;
+}
\ No newline at end of file
diff --git a/mbr.S b/mbr.S
index 9c3e018..1c42849 100644
--- a/mbr.S
+++ b/mbr.S
@@ -11,6 +11,7 @@ _start:
     mov %cr0, %eax
     or $1, %eax             // 3. enable protected mode
     mov %eax, %cr0
+
     ljmp $SEG_KCODE << 3, $init_32bit // 4. far jump
 
 
diff --git a/tasks/float_basic/fp16/run/output b/tasks/float_basic/fp16/run/output
new file mode 100644
index 0000000..a5c986d
--- /dev/null
+++ b/tasks/float_basic/fp16/run/output
@@ -0,0 +1,53 @@
+67FE
+63FE
+5FFE
+5BFE
+57FE
+53FE
+4FFE
+4BFE
+47FE
+43FE
+3FFE
+3BFE
+37FE
+33FE
+2FFE
+2BFE
+27FE
+23FE
+1FFE
+1BFE
+17FE
+13FE
+0FFE
+0BFE
+07FE
+03FF
+6680
+6280
+5E80
+5A80
+5680
+5280
+4E80
+4A80
+4680
+4280
+3E80
+3A80
+3680
+3280
+2E80
+2A80
+2680
+2280
+1E80
+1A80
+1680
+1280
+0E80
+0A80
+0680
+0340
+019F
diff --git a/tasks/float_basic/fp16/solution b/tasks/float_basic/fp16/solution
new file mode 100755
index 0000000..17609cc
Binary files /dev/null and b/tasks/float_basic/fp16/solution differ
diff --git a/tasks/float_basic/okay-1/solution b/tasks/float_basic/okay-1/solution
new file mode 100755
index 0000000..c4c7a78
Binary files /dev/null and b/tasks/float_basic/okay-1/solution differ
diff --git a/tasks/x86_review/anagram/solution b/tasks/x86_review/anagram/solution
new file mode 100755
index 0000000..bb70485
Binary files /dev/null and b/tasks/x86_review/anagram/solution differ
diff --git a/tasks/x86_review/count/solution b/tasks/x86_review/count/solution
new file mode 100755
index 0000000..a935b7d
Binary files /dev/null and b/tasks/x86_review/count/solution differ
diff --git a/tasks/x86_review/ppm-magic/a.out b/tasks/x86_review/ppm-magic/a.out
new file mode 100755
index 0000000..d899913
Binary files /dev/null and b/tasks/x86_review/ppm-magic/a.out differ
diff --git a/tasks/x86_review/ppm-magic/solution b/tasks/x86_review/ppm-magic/solution
new file mode 100755
index 0000000..c59210e
Binary files /dev/null and b/tasks/x86_review/ppm-magic/solution differ
diff --git a/tasks/x86_review/recursion/solution b/tasks/x86_review/recursion/solution
new file mode 100755
index 0000000..f3d4ca5
Binary files /dev/null and b/tasks/x86_review/recursion/solution differ