# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1109830 | 2024-11-07T17:39:22 Z | Kirill22 | Odd-even (IZhO11_oddeven) | C++17 | 0 ms | 0 KB |
import math n = int(input()) l = 0 r = 8 * n while l + 1 < r: m = (l + r) // 2 if m * (m + 1) / 2 <= n: l = m else: r = m print(2 * n - l - 1)