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【集训队作业2018】Simple Tree 统计

满分提交

得分分布

Created with Raphaël 2.1.201503004506001009743383028252315131030
score: 100

前缀和

Created with Raphaël 2.1.205001,0001,5002,0001009080706050403020100
score: ≤100

后缀和

Created with Raphaël 2.1.205001,0001,5002,0001009080706050403020100
score: ≥100