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View Compilation Error

0_0_39262773_6611\Main.java:22: 错误: 找不到符号
            out.println(list.size() >= c ? list.get((int) (list.size() - c)) : -1);
            ^
  符号:   变量 out
  位置: 类 Main
0_0_39262773_6611\Main.java:24: 错误: 找不到符号
        out.flush();
        ^
  符号:   变量 out
  位置: 类 Main
0_0_39262773_6611\Main.java:25: 错误: 找不到符号
        out.close();
        ^
  符号:   变量 out
  位置: 类 Main
3 个错误


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