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View Compilation Error

0_0_28286774_31307\Main.java:16: 错误: 不兼容的类型: 从long转换到int可能会有损失
            BigInteger b=BigInteger.valueOf(2).pow(a-1).add(BigInteger.valueOf(1));
                                                    ^
注: 某些消息已经过简化; 请使用 -Xdiags:verbose 重新编译以获得完整输出
1 个错误


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