num sixes = 0
num sevens = 0
num rolls = int(input('Enter number of rolls:\n'))
if num rolls >= 1:
for i in range(num rolls):
die1 = random.randint(1,6)
die2 = random.randint(1,6)
roll total = die1 + die2
#Count number of sixes and sevens
if roll total == 6:
num sixes = num sixes + 1
if roll total == 7:
num sevens = num sevens +1
print('Roll {} is {} ({} + {})'.format(i, roll total, die1, die2))
print('\nDice roll statistics:')
print('6s:', num sixes)
print('7s:', num sevens)
else:
print('Invalid number of rolls. Try again.')
