diff --git a/patches/0001-fix-truncation-error.patch b/patches/0001-fix-truncation-error.patch
new file mode 100644
index 0000000..88e6524
--- /dev/null
+++ b/patches/0001-fix-truncation-error.patch
@@ -0,0 +1,31 @@
+From 465635efbdfcf7f23d6c45314183b6dbd24c5846 Mon Sep 17 00:00:00 2001
+From: Sergii Piatakov <sergii.piatakov@globallogic.com>
+Date: Thu, 15 Nov 2018 15:28:04 +0200
+Subject: [PATCH 1/2] fix truncation error
+
+To convert float to integer the truncation is performed, but the
+rounding is expected.
+
+Test: Add (4.9, 4.9) should return 10.
+Signed-off-by: Sergii Piatakov <sergii.piatakov@globallogic.com>
+Signed-off-by: IO-23 Oleh Shmuliar <hasslesstech@tutanota.com>
+---
+ calculator.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/calculator.cpp b/calculator.cpp
+index b91afea..d93e35b 100644
+--- a/calculator.cpp
++++ b/calculator.cpp
+@@ -2,7 +2,7 @@
+ 
+ int Calculator::Add (double a, double b)
+ {
+-    return a + b;
++	return a + b + 0.5;
+ }
+ 
+ int Calculator::Sub (double a, double b)
+-- 
+2.39.5
+
diff --git a/patches/0002-formatting-use-tabs-instead-of-spaces.patch b/patches/0002-formatting-use-tabs-instead-of-spaces.patch
new file mode 100644
index 0000000..6def18b
--- /dev/null
+++ b/patches/0002-formatting-use-tabs-instead-of-spaces.patch
@@ -0,0 +1,49 @@
+From 53143e5d9ebdab0ea06205b9e2c2dbf2a6d0b8ca Mon Sep 17 00:00:00 2001
+From: Sergii Piatakov <sergii.piatakov@globallogic.com>
+Date: Thu, 15 Nov 2018 15:26:35 +0200
+Subject: [PATCH 2/2] formatting: use tabs instead of spaces
+
+Signed-off-by: Sergii Piatakov <sergii.piatakov@globallogic.com>
+Signed-off-by: IO-23 Oleh Shmuliar <hasslesstech@tutanota.com>
+---
+ calculator.cpp | 4 ++--
+ calculator.h   | 6 +++---
+ 2 files changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/calculator.cpp b/calculator.cpp
+index d93e35b..f323e14 100644
+--- a/calculator.cpp
++++ b/calculator.cpp
+@@ -2,10 +2,10 @@
+ 
+ int Calculator::Add (double a, double b)
+ {
+-	return a + b + 0.5;
++	return a + b;
+ }
+ 
+ int Calculator::Sub (double a, double b)
+ {
+-    return Add (a, -b);
++	return Add (a, -b);
+ }
+diff --git a/calculator.h b/calculator.h
+index 3740907..d59d596 100644
+--- a/calculator.h
++++ b/calculator.h
+@@ -3,9 +3,9 @@
+ 
+ class Calculator
+ {
+-    public:
+-        int Add (double, double);
+-        int Sub (double, double);
++	public:
++		int Add (double, double);
++		int Sub (double, double);
+ };
+ 
+ #endif//CALCULATOR_H
+-- 
+2.39.5
+