import thread

def sum_a_bit(i, total):
    for j in range(i, i + 10000):
        total += j
    return total

def f():
    total = 0
    for i in range(0, 15000000, 10000):
        total = sum_a_bit(i, total)
    print total

for j in range(2):
    thread.start_new_thread(f, ())

raw_input()