addition of balancedstring and nauuo subjects

subjects/balancedstring.en.md

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+## balancedstring
+
+### Instructions
+
+Balanced string is a string that has equal quantity of 'C' and 'D' characters.
+
+Write a program that takes a string and outputs maximum amount of balanced strings with `\n` at the end of line.
+
+If the number of arguments is not 1, display `\n`.S
+
+
+### Usage
+
+```console
+$> go build
+$> ./main "CDCCDDCDCD"
+4
+$> ./main "CDDDDCCCDC"
+3
+$> ./main "DDDDCCCC"
+1
+$> ./main "CDCCCDDCDD"
+2
+```
+
+In first example "CDCCDDCDCD" can be split into "CD", "CCDD", "CD", "CD", each substring contains same number of 'C' and 'D'.
+
+Second, "CDDDDCCCDC" can be split into: "CD", "DDDCCC", "DC".
+
+"DDDDCCCC" can be split into "DDDDCCCC".
+
+"CDCCCDDCDD" can be split into: "CD", "CCCDDCDD", since each substring contains an equal number of 'C' and 'D'

subjects/nauuo.en.md

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+## nauuo
+
+## **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
+
+There was a vote. There are people who voted positively, negatively, and randomly.
+Figure out if the final answer depends on random people or not.
+If it does print '?'
+
+Write a function, `Nauuo`, that returns final result of voting.
+
+### Expected function
+
+```go
+func Nauuo(plus, minus, rand int) string {
+
+}
+```
+
+### Usage
+
+Here is a possible program to test your function :
+
+```go
+package main
+
+import (
+	"fmt"
+	piscine ".."
+)
+
+func main() {
+	fmt.Println(piscine.Nauuo(50, 43, 20))
+	fmt.Println(piscine.Nauuo(13, 13, 0))
+	fmt.Println(piscine.Nauuo(10, 9, 0))
+	fmt.Println(piscine.Nauuo(5, 9, 2))
+}
+```
+
+And its output :
+
+```console
+student@ubuntu:~/[[ROOT]]/test$ go build
+student@ubuntu:~/[[ROOT]]/test$ ./test
+?
+0
++
+-
+student@ubuntu:~/[[ROOT]]/test$
+```