A Pre-RMO question! -26

Geometry Level 2

Let $XOY$ be a triangle with $\angle XOY=90\degree$ . Let $M$ and $N$ be mid-points of $\overline{OX}$ and $\overline{OY}$ respectively.

If $\overline{XN}=19cm$ and $\overline{YM}=22cm$ . Find measure of $\overline{XY}$ in cm.