algorithme de résolution du jeu des chiffres et des lettres
"des chiffres et des lettres" is a french game where you have to find one number with a combination of number, using each number once and using only basic operations +,-,*,/.
For example : list of number [5,2,10,3] to find 60. 103 = 30 newlist = [5,2,30]. 302 = 60. We found the correct combination.