Add missing readmes

subjects/listremoveifprog.en.md

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+## listremoveifprog
+
+## **WARNING! VERY IMPORTANT!**
+
+For this exercise a function will be tested **with the exam own main**. However the student **still needs** to submit a structured program:
+
+This means that:
+
+- The package needs to be named `package main`.
+- The submitted code needs one declared function main(```func main()```) even if empty.
+- The function main declared needs to **also pass** the `Restrictions Checker`(illegal functions tester). It is advised for the student to just empty the function main after its own testings are done.
+- Every other rules are obviously the same than for a `program`.
+
+### Instructions
+
+Write a function `ListRemoveIf` that removes all elements that have a `Data` field equal to the `data_ref` in the argument of the function.
+
+### Expected function and structure
+
+```go
+type NodeL struct {
+	Data interface{}
+	Next *NodeL
+}
+
+type List struct {
+	Head *NodeL
+	Tail *NodeL
+}
+
+func ListRemoveIf(l *List, data_ref interface{}) {
+
+}
+```

subjects/listsizeprog.en.md

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+## listsizeprog
+
+## **WARNING! VERY IMPORTANT!**
+
+For this exercise a function will be tested **with the exam own main**. However the student **still needs** to submit a structured program:
+
+This means that:
+
+- The package needs to be named `package main`.
+- The submitted code needs one declared function main(```func main()```) even if empty.
+- The function main declared needs to **also pass** the `Restrictions Checker`(illegal functions tester). It is advised for the student to just empty the function main after its own testings are done.
+- Every other rules are obviously the same than for a `program`.
+
+### Instructions
+
+Write a function `ListSize` that returns the number of elements in a linked list `l`.
+
+### Expected function and structure
+
+```go
+type NodeL struct {
+	Data interface{}
+	Next *NodeL
+}
+
+type List struct {
+	Head *NodeL
+	Tail *NodeL
+}
+
+func ListSize(l *List) int {
+
+}
+```