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View Compilation Error

0_0_18969403_20660\Main.java:5: 错误: 找不到符号
		while(in.hasNext()){
		      ^
  符号:   变量 in
  位置: 类 Main
0_0_18969403_20660\Main.java:6: 错误: 找不到符号
			int n=in.nextInt();
			      ^
  符号:   变量 in
  位置: 类 Main
2 个错误


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