diff --git a/hw01/main.py b/hw01/main.py
new file mode 100644
index 0000000..f931dcc
--- /dev/null
+++ b/hw01/main.py
@@ -0,0 +1,20 @@
+def add(x,y):
+    return x+y
+
+
+def calc():
+    while(True):
+        operation = input("Enter operation from [+]: ")
+        if operation == "+":
+            break
+        print("Enter valid operation")
+
+    x = float(input("1. Enter number: "))
+    y = float(input("2. Enter number: "))
+
+    if operation == "+":
+        print(add(x,y))
+
+
+if __name__ == "__main__":
+    calc()
\ No newline at end of file