import time

def concat():
	start = time.time()
	s = ""
	s += "Вася"
	s += "1"
	return time.time() - start


def join():
	start = time.time()
	lst = ["Вася", "1"]
	s = "".join(lst)
	return time.time() - start

reps = 1000000
ct = 0
jt = 0
for i in range(reps):
	ct += concat()
	jt += join()

print("%d join = %.6f" % (reps, jt))
print("%d concat = %.6f" % (reps, ct))