Task #M016P

Memory 16 MB Time 1000 ms Complexity 17 %

Eng yaqin tub son

Sizga \(n\) soni beriladi. \(n\) soniga eng yaqin tub sonni chop eting. Ular 2 ta bo’lsa, ikkovini ham chop eting.

Eng yaqin son deb kiritigan son bilan absolut ayirmasi eng kichik tub songa teng bo'lgan songa aytiladi

Input:

Bitta butun son \(k (1 \le k \le 10^9)\) beriladi.

Output:

Masala javobini chiqaring.

Examples

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