Submission #523242

#	Time	Username	Problem	Language	Result	Execution time	Memory
523242		redstonegamer22	Odd-even (IZhO11_oddeven)	C++17	Compilation error	0 ms	0 KiB

oddeven

import math

def solve(n):
    n = int(n)

    m = math.isqrt(2 * n) - 5

    while m <= -1 or (m + 1) * (m + 2) // 2 < n:
        m = m + 1


    a = m * (m + 1) // 2 + m * (m - 1) // 2
    b = n - m * (m + 1) // 2


    ans = a + 2 * b - 1

    return ans

print(solve(input()))

Compilation message (stderr)

oddeven.cpp:1:1: error: 'import' does not name a type
    1 | import math
      | ^~~~~~