时间限制: 2s
内存限制: 192MB 提交: 2375 解决: 1330
题目描述
乘坐飞机时，当乘客行李小于等于20公斤时，按每公斤1.68元收费，大于20公斤时，按每公斤1.98元收费，编程计算收费(保留2位小数)。
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