foo.c: In function 'main':
foo.c:37:54: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   37 |                 if (a[i] + k < a[i + 1]||a[i]==a[i+1]&&i==n-2)//该大小不被吞
      |                                          ~~~~~~~~~~~~^~~~~~~~

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