Recover the mutated source code (for robbers)
Python 2, FryAmTheEggman
x=n=1;j=input();
while j&gt;2:
    x,n=n,x+n;j-=1;
    ##while~-all(n%i for i in range(2,n)):n+=1;
print n

Used 12 edits. Put in an extra # to make it 13.