NOIP-2020

[pdfjs-viewer attachment_id=16356 url=../assets/2022/07/1657327820-noip2020.pdf viewer_width=0 viewer_height=800 url=../assets/2022/07/1657327820-noip2020.pdf download=true print=false fullscreen=true fullscreen_target=true fullscreen_text="全屏" zoom=auto ]