foo.c:8:1: error: unknown type name 'bool'; did you mean '_Bool'?
 bool judge(int x)//判断高度x是否所有城堡都可到达
 ^~~~
 _Bool
foo.c: In function 'main':
foo.c:19:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&t);
     ^~~~~~~~~~~~~~
foo.c:23:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&n);
         ^~~~~~~~~~~~~~
foo.c:29:13: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&tlen);
             ^~~~~~~~~~~~~~~~~
foo.c:35:17: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
                 scanf("%d",&tlen);
                 ^~~~~~~~~~~~~~~~~

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