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View Compilation Error

0_0_34182746_20105\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_34182746_20105\Main.java:3: 错误: 需要class, interface或enum
    while (sc.hasNext()) {
    ^
0_0_34182746_20105\Main.java:5: 错误: 需要class, interface或enum
        int m = sc.nextInt();
        ^
0_0_34182746_20105\Main.java:6: 错误: 需要class, interface或enum
        Map<Integer, int[]> aa = new HashMap<>();
        ^
0_0_34182746_20105\Main.java:7: 错误: 需要class, interface或enum
        aa.put(0, new int[]{0});
        ^
0_0_34182746_20105\Main.java:8: 错误: 需要class, interface或enum
        aa.put(1, new int[]{1});
        ^
0_0_34182746_20105\Main.java:9: 错误: 需要class, interface或enum
        aa.put(2, new int[]{2, 4, 6, 8});
        ^
0_0_34182746_20105\Main.java:10: 错误: 需要class, interface或enum
        aa.put(3, new int[]{3, 9, 7, 1});
        ^
0_0_34182746_20105\Main.java:11: 错误: 需要class, interface或enum
        aa.put(4, new int[]{4, 6});
        ^
0_0_34182746_20105\Main.java:12: 错误: 需要class, interface或enum
        aa.put(5, new int[]{5, 0});
        ^
0_0_34182746_20105\Main.java:13: 错误: 需要class, interface或enum
        aa.put(6, new int[]{6});
        ^
0_0_34182746_20105\Main.java:14: 错误: 需要class, interface或enum
        aa.put(7, new int[]{7, 9, 3, 1});
        ^
0_0_34182746_20105\Main.java:15: 错误: 需要class, interface或enum
        aa.put(8, new int[]{8, 4, 2, 6});
        ^
0_0_34182746_20105\Main.java:16: 错误: 需要class, interface或enum
        aa.put(9, new int[]{9, 1});
        ^
0_0_34182746_20105\Main.java:17: 错误: 需要class, interface或enum
        int b = m % (aa.get(n % 10).length);
        ^
0_0_34182746_20105\Main.java:18: 错误: 需要class, interface或enum
        System.out.println(b==0 ? aa.get(n % 10)[aa.get(n % 10).length-1]:aa.get(n % 10)[b-1]);
        ^
0_0_34182746_20105\Main.java:19: 错误: 需要class, interface或enum
    }
    ^
17 个错误


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