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View Compilation Error

0_0_26028390_3790\Main.java:12: 错误: 找不到符号
            BigInteger ans=BigInteger.valueOf(2)*pow(n);
                                                 ^
  符号:   方法 pow(int)
  位置: 类 Main
0_0_26028390_3790\Main.java:13: 错误: 找不到符号
            System.out.printIn(ans);
                      ^
  符号:   方法 printIn(BigInteger)
  位置: 类型为PrintStream的变量 out
2 个错误


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