Solved the first problem
Solved the second problem
Solved the third problem
Solved the fourth problem
Solved the fifth problem
Solved the sixth problem
Solved the seventh problem
Solved the eighth problem
Solved the nineth problem
Solved the tenth problem
Solved the eleventh problem
Remove input files
Solved the twelvth problem
Solved the thirteenth problem
Solved the fourteenth problem
Solved the fifteenth problem
Solved the sixteenth problem