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# ICPC-UVALive # ICPC-UVA # ICPC-HDU # ICPC-ZOJ # ICPC-DFS hdu1016 ZOJ1457 Prime Ring Problem UVA524 UVALive5270
03-24
![UVA524 UVALive5270 HDU1016 ZOJ1457 Prime Ring Problem【DFS】Prime Ring Problem[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)