# Programmer: Sriram Pemmaraju 
# Feb 13th, 2013 

# This program simulates the roll of two six-sided dice 
# as many times as specified by the input. Then the program 
# outputs the number of times 7 shows up as the sum of the two 
# dice rolls

import random n = int(raw_input("Enter the number of times you want the dice rolled: "))

counter = 0 # keeps track of the number of rolls 
numSevens = 0 # keeps track of the number of sevens

# while-loop that simulates the roll of two six-sided dice n times
while counter < n: 
    # Roll two six-sided dice and compute the sum of the outcomes
    sumRolls = random.randint(1, 6) + random.randint(1, 6) 

    # if sum is seven then update a counter called numSevens
    if sumRolls == 7:
        numSevens = numSevens + 1 

    counter = counter + 1

print "The number of sevens is", numSevens