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View Compilation Error

0_0_4869629_29153\Main.java:11: 找不到符号
符号: 变量 input
位置: 类 Main
while(input.hasNextInt())
      ^
0_0_4869629_29153\Main.java:13: 找不到符号
符号: 变量 input
位置: 类 Main
a = input.nextInt();
    ^
0_0_4869629_29153\Main.java:14: 找不到符号
符号: 变量 input
位置: 类 Main
b= input.nextInt();
   ^
3 错误


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