![ ](https://mirror.codeforces.com/predownloaded/84/28/84285f4f80e9856b7fba2f87550a4728a1422731.png)↵
![ ](/predownloaded/31/95/31954f0c49e43603b3ddc90e51a85a3796c58edf.png)↵
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So sad.
![ ](/predownloaded/31/95/31954f0c49e43603b3ddc90e51a85a3796c58edf.png)↵
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So sad.