foo.c: In function 'main':
foo.c:33:61: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   33 |                 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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