diff --git a/TPC2/main.py b/TPC2/main.py
new file mode 100644
index 0000000..ff433c8
--- /dev/null
+++ b/TPC2/main.py
@@ -0,0 +1,20 @@
+import sys
+
+is_on = False
+sum = 0
+
+def main():
+    global sum,is_on
+    for line in sys.stdin:
+        line = line.strip()
+        if line.isdigit() & is_on:
+            sum += int(line)
+        elif line.lower() == "on":
+            is_on = True
+        elif line.lower() == "off":
+            is_on = False
+        elif line == "=":
+            print(sum)
+
+if __name__ == "__main__":
+    main()