diff --git a/2026-03-10/c1.py b/2026-03-10/c1.py
new file mode 100644
index 0000000..e220079
--- /dev/null
+++ b/2026-03-10/c1.py
@@ -0,0 +1,7 @@
+code = """code = "__code__"
+ref = '"'
+sign = "__" + "code" + "__"
+print(code.replace(sign, ref + ref + code + ref + ref), end="")"""
+ref = '"'
+sign = "__" + "code" + "__"
+print(code.replace(sign, ref + ref + code + ref + ref), end="")
diff --git a/2026-03-10/c2.py b/2026-03-10/c2.py
new file mode 100644
index 0000000..e220079
--- /dev/null
+++ b/2026-03-10/c2.py
@@ -0,0 +1,7 @@
+code = """code = "__code__"
+ref = '"'
+sign = "__" + "code" + "__"
+print(code.replace(sign, ref + ref + code + ref + ref), end="")"""
+ref = '"'
+sign = "__" + "code" + "__"
+print(code.replace(sign, ref + ref + code + ref + ref), end="")
diff --git a/2026-03-10/c3.py b/2026-03-10/c3.py
new file mode 100644
index 0000000..9ab1f3d
--- /dev/null
+++ b/2026-03-10/c3.py
@@ -0,0 +1,7 @@
+code = """code = "__code__"
+ref = '"'
+sign = "__" + "code" + "__"
+print(code.replace(sign, ref + ref + code + ref + ref), end="")"""
+ref = '"'
+sign = "__" + "code" + "__"
+print(code.replace(sign, ref + ref + code + ref + ref), end="")
\ No newline at end of file
diff --git a/2026-03-10/c4.py b/2026-03-10/c4.py
new file mode 100644
index 0000000..9ab1f3d
--- /dev/null
+++ b/2026-03-10/c4.py
@@ -0,0 +1,7 @@
+code = """code = "__code__"
+ref = '"'
+sign = "__" + "code" + "__"
+print(code.replace(sign, ref + ref + code + ref + ref), end="")"""
+ref = '"'
+sign = "__" + "code" + "__"
+print(code.replace(sign, ref + ref + code + ref + ref), end="")
\ No newline at end of file
diff --git a/2026-03-10/c5.py b/2026-03-10/c5.py
new file mode 100644
index 0000000..9ab1f3d
--- /dev/null
+++ b/2026-03-10/c5.py
@@ -0,0 +1,7 @@
+code = """code = "__code__"
+ref = '"'
+sign = "__" + "code" + "__"
+print(code.replace(sign, ref + ref + code + ref + ref), end="")"""
+ref = '"'
+sign = "__" + "code" + "__"
+print(code.replace(sign, ref + ref + code + ref + ref), end="")
\ No newline at end of file
diff --git a/2026-03-10/mypython22.py b/2026-03-10/mypython22.py
new file mode 100644
index 0000000..e220079
--- /dev/null
+++ b/2026-03-10/mypython22.py
@@ -0,0 +1,7 @@
+code = """code = "__code__"
+ref = '"'
+sign = "__" + "code" + "__"
+print(code.replace(sign, ref + ref + code + ref + ref), end="")"""
+ref = '"'
+sign = "__" + "code" + "__"
+print(code.replace(sign, ref + ref + code + ref + ref), end="")