print("program prints out the first n primes")

n=eval(input("please enter an n: "))
primes = 0
i = 0
twinprimes=0
previousprime=0

while (primes != n):
        i = i + 1
        for j in range(2,i):
                if (i%j) == 0:
                        print(i, end=", ")
                        primes = primes + 1
            if(previousprime + 2 == i):
                twinprimes = twinprimes + 1
                previousprime = i
                        break

print("there are", twinprimes, "twin primes")