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View Compilation Error

0_0_38121842_11283\Main.java:3: 错误: 需要class, interface或enum
public Main {
       ^
0_0_38121842_11283\Main.java:5: 错误: 需要class, interface或enum
    static int pre[]=new int[N];
           ^
0_0_38121842_11283\Main.java:6: 错误: 需要class, interface或enum
    static int rank[]=new int[N];
           ^
0_0_38121842_11283\Main.java:7: 错误: 需要class, interface或enum
    static void init(int n)
           ^
0_0_38121842_11283\Main.java:9: 错误: 需要class, interface或enum
        for(int i = 0; i < n; i++){
                       ^
0_0_38121842_11283\Main.java:9: 错误: 需要class, interface或enum
        for(int i = 0; i < n; i++){
                              ^
0_0_38121842_11283\Main.java:11: 错误: 需要class, interface或enum
            rank[i] = 1;
            ^
0_0_38121842_11283\Main.java:12: 错误: 需要class, interface或enum
        }
        ^
0_0_38121842_11283\Main.java:17: 错误: 需要class, interface或enum
        return find(pre[x]);
        ^
0_0_38121842_11283\Main.java:18: 错误: 需要class, interface或enum
    }
    ^
0_0_38121842_11283\Main.java:23: 错误: 需要class, interface或enum
        y = find(y);
        ^
0_0_38121842_11283\Main.java:24: 错误: 需要class, interface或enum
        if (x!=y)
        ^
0_0_38121842_11283\Main.java:27: 错误: 需要class, interface或enum
            rank[y]+=rank[x];
            ^
0_0_38121842_11283\Main.java:28: 错误: 需要class, interface或enum
        }
        ^
0_0_38121842_11283\Main.java:31: 错误: 需要class, interface或enum
    public static void main(String[] args) {
                  ^
0_0_38121842_11283\Main.java:33: 错误: 需要class, interface或enum
        int t=in.nextInt();
        ^
0_0_38121842_11283\Main.java:34: 错误: 需要class, interface或enum
        while (t>0)
        ^
0_0_38121842_11283\Main.java:37: 错误: 需要class, interface或enum
            int n=in.nextInt();
            ^
0_0_38121842_11283\Main.java:38: 错误: 需要class, interface或enum
            init(n);
            ^
0_0_38121842_11283\Main.java:39: 错误: 需要class, interface或enum
            for(int i=1;i<=n-1;i++)
            ^
0_0_38121842_11283\Main.java:39: 错误: 需要class, interface或enum
            for(int i=1;i<=n-1;i++)
                        ^
0_0_38121842_11283\Main.java:39: 错误: 需要class, interface或enum
            for(int i=1;i<=n-1;i++)
                               ^
0_0_38121842_11283\Main.java:42: 错误: 需要class, interface或enum
                u=in.nextInt();
                ^
0_0_38121842_11283\Main.java:43: 错误: 需要class, interface或enum
                v=in.nextInt();
                ^
0_0_38121842_11283\Main.java:44: 错误: 需要class, interface或enum
                w=in.nextInt();
                ^
0_0_38121842_11283\Main.java:45: 错误: 需要class, interface或enum
                if(w==0) {
                ^
0_0_38121842_11283\Main.java:47: 错误: 需要class, interface或enum
                }
                ^
0_0_38121842_11283\Main.java:50: 错误: 需要class, interface或enum
            for(int i=1;i<=n;i++){
            ^
0_0_38121842_11283\Main.java:50: 错误: 需要class, interface或enum
            for(int i=1;i<=n;i++){
                        ^
0_0_38121842_11283\Main.java:50: 错误: 需要class, interface或enum
            for(int i=1;i<=n;i++){
                             ^
0_0_38121842_11283\Main.java:53: 错误: 需要class, interface或enum
            }
            ^
0_0_38121842_11283\Main.java:55: 错误: 需要class, interface或enum
        }
        ^
32 个错误


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