Kyselyt

### KYSELYT (dt21k8-x(x-1)||x=10) ###
 
def infiniteSumCalculator(a):
	# we always haz to bear with magnitude of the number.
	mag = 1
 
	# spec haz a bug, this is only a hotfix
 
	# lol this do-while h4x again :D
	while True:
		# i dunno whats going on there but the shell shows it wurkz
		a -= 9*10**(mag-1)*mag
		if a <= 0:
			# counter the decrement ":D"
			a += 9*10**(mag-1)*mag
			break
		# i++ :D
		mag += 1
 
	a += mag-1
	## fix for the spec hotfix special case
	#if mag == 1:
	#	a -= 1
#
#	## second hotfix
#	#if mag == 2 and a == 1:
#	#	mag -=1
	#	a -= 1
 
	# lets just return this puke from shell
	return str(a // mag + 10**(mag-1) -1)[a % mag]
 
# what about one useless main() more
def main(a):
	pass
 
### just testing functions here ###
 
def concatenated(a):
	return "".join([str(i) for i in range(1,a)])
 
def massTest(n):
	q = concatenated(n)
	for i in range(n):
		try:
			b = infiniteSumCalculator(i+1)
			if q[i] != b:
				print(i, q[i], b, False)
		except Exception as e:
			print("{} {} {} {}: {}".format(i, q[i], b, e.__class__.__name__, e))
 
### testing site ends here ###
 
# lets escape this thing from pyyttons moduuls
if __name__ == "__main__":
	# this looks like a c-ish thing
	for i in range(int(input())):
		# and this is pyton
		print(infiniteSumCalculator(int(input())))
 
# remember: sometimes u can just prematurely optimize things
# very well but it makes very strange chewgum code. Even me
# cannot fully understand what is happenings in this file.

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 2

Verdict: ACCEPTED

Test 3

Group: 3

Verdict: ACCEPTED