[HackerEarth] This is year 2050 and your school is hosting IOI 2050 this time. To organize the contest a lot of LAN cables will be laid down. N students from different countries will be coming to earn - 题解

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题号 P20398
标题 [HackerEarth] This is year 2050 and your school is hosting IOI 2050 this time. To organize the contest a lot of LAN cables will be laid down. N students from different countries will be coming to earn
难度 普及
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