2017年“嘉杰信息杯” 中国大学生程序设计竞赛全国邀请赛:I— Strange Optimization

题目连接：传送门php Strange Optimization Bobo is facing a strange optimization problem. Given n,m, he is going to find a real number α such that f(12+α) is maximized, where f(t)=mini,j∈Z|in−jm+t|. Help him!io

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