diff --git a/csharp/Feb22/Feb22.sln b/old/csharp/Feb22/Feb22.sln similarity index 100% rename from csharp/Feb22/Feb22.sln rename to old/csharp/Feb22/Feb22.sln diff --git a/csharp/Feb22/cn-0221/Program.cs b/old/csharp/Feb22/cn-0221/Program.cs similarity index 100% rename from csharp/Feb22/cn-0221/Program.cs rename to old/csharp/Feb22/cn-0221/Program.cs diff --git a/csharp/Feb22/cn-0221/cn-0221.csproj b/old/csharp/Feb22/cn-0221/cn-0221.csproj similarity index 100% rename from csharp/Feb22/cn-0221/cn-0221.csproj rename to old/csharp/Feb22/cn-0221/cn-0221.csproj diff --git a/csharp/Feb22/int-0221/Program.cs b/old/csharp/Feb22/int-0221/Program.cs similarity index 100% rename from csharp/Feb22/int-0221/Program.cs rename to old/csharp/Feb22/int-0221/Program.cs diff --git a/csharp/Feb22/int-0221/int-0221.csproj b/old/csharp/Feb22/int-0221/int-0221.csproj similarity index 100% rename from csharp/Feb22/int-0221/int-0221.csproj rename to old/csharp/Feb22/int-0221/int-0221.csproj diff --git a/csharp/Feb22/int-0222/Program.cs b/old/csharp/Feb22/int-0222/Program.cs similarity index 100% rename from csharp/Feb22/int-0222/Program.cs rename to old/csharp/Feb22/int-0222/Program.cs diff --git a/csharp/Feb22/int-0222/int-0222.csproj b/old/csharp/Feb22/int-0222/int-0222.csproj similarity index 100% rename from csharp/Feb22/int-0222/int-0222.csproj rename to old/csharp/Feb22/int-0222/int-0222.csproj diff --git a/golang/2202/220215-CN.go b/old/golang/2202/220215-CN.go similarity index 100% rename from golang/2202/220215-CN.go rename to old/golang/2202/220215-CN.go diff --git a/golang/2202/220215.go b/old/golang/2202/220215.go similarity index 100% rename from golang/2202/220215.go rename to old/golang/2202/220215.go diff --git a/golang/2202/220216.go b/old/golang/2202/220216.go similarity index 100% rename from golang/2202/220216.go rename to old/golang/2202/220216.go diff --git a/golang/2202/220217-CN.go b/old/golang/2202/220217-CN.go similarity index 100% rename from golang/2202/220217-CN.go rename to old/golang/2202/220217-CN.go diff --git a/golang/2202/220217.go b/old/golang/2202/220217.go similarity index 100% rename from golang/2202/220217.go rename to old/golang/2202/220217.go diff --git a/golang/2202/220218-CN.go b/old/golang/2202/220218-CN.go similarity index 100% rename from golang/2202/220218-CN.go rename to old/golang/2202/220218-CN.go diff --git a/golang/2202/220218.go b/old/golang/2202/220218.go similarity index 100% rename from golang/2202/220218.go rename to old/golang/2202/220218.go diff --git a/golang/2202/220219-CN.go b/old/golang/2202/220219-CN.go similarity index 100% rename from golang/2202/220219-CN.go rename to old/golang/2202/220219-CN.go diff --git a/golang/2202/220219.go b/old/golang/2202/220219.go similarity index 100% rename from golang/2202/220219.go rename to old/golang/2202/220219.go diff --git a/golang/2202/220220-CN.go b/old/golang/2202/220220-CN.go similarity index 100% rename from golang/2202/220220-CN.go rename to old/golang/2202/220220-CN.go diff --git a/golang/2202/220220.go b/old/golang/2202/220220.go similarity index 100% rename from golang/2202/220220.go rename to old/golang/2202/220220.go diff --git a/golang/2202/220221-CN.go b/old/golang/2202/220221-CN.go similarity index 100% rename from golang/2202/220221-CN.go rename to old/golang/2202/220221-CN.go diff --git a/golang/2202/220221.go b/old/golang/2202/220221.go similarity index 100% rename from golang/2202/220221.go rename to old/golang/2202/220221.go diff --git a/golang/2202/220224.go b/old/golang/2202/220224.go similarity index 100% rename from golang/2202/220224.go rename to old/golang/2202/220224.go diff --git a/golang/go.mod b/old/golang/go.mod similarity index 100% rename from golang/go.mod rename to old/golang/go.mod diff --git a/golang/go.sum b/old/golang/go.sum similarity index 100% rename from golang/go.sum rename to old/golang/go.sum