import time


# a+b+c=1000，且 a2+b2=c^2
start_time = time.time()
print(start_time)
for a in range(0, 1001):
    for b in range(0, 1001):
        c = 1000-a-b
        if a ** 2 + b ** 2 == c ** 2:
            print("a,b,c:%d,%d,%d" % (a, b, c))

end_time = time.time()
print("elapsed:%f" % (end_time-start_time))
print("complete")