foo.cc: In function 'bool cmp(xx, xx)':
foo.cc:16:33: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   16 |         return a.e>b.e||a.e==b.e&&a.i<b.i;
      |                         ~~~~~~~~^~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:39:26: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   39 |         while(i<10||i>=10&&q[j].e==si)
      |                     ~~~~~^~~~~~~~~~~~

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