Submission #1270225

#	Time	Username	Problem	Language	Result	Execution time	Memory
1270225		binminh01	Odd-even (IZhO11_oddeven)	Pypy 3	100 / 100	166 ms	48808 KiB

oddeven

n = int(input())
l = 0
r = n
while l < r:
	m = (l + r + 1)//2
	if m*(m + 1) < 2*n: l = m
	else: r = m - 1
print(l*l - 1 + 2*(n - l*(l + 1)//2))

Compilation message (stdout)

Compiling 'oddeven.py'...

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  adding: __main__.pyc (deflated 27%)

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• Subtask 1: 100 / 100