foo.cc: In function 'int main()':
foo.cc:9:26: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    9 |                 if(a%4==0&&a%100!=0||a%400==0)
      |                    ~~~~~~^~~~~~~~~~
foo.cc:14:18: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   14 |         if(d%4==0&&d%100!=0||d%400==0)
      |            ~~~~~~^~~~~~~~~~

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