foo.cc: In function 'int main()':
foo.cc:10:22: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   10 |   if((i%100==0&&i&400==0)||i%4==0) sum++;
      |                   ~~~^~~
foo.cc:15:24: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   15 |    if(((i%100==0&&i&400==0)||i%4==0)&&i==2) sum+=num[0];
      |                     ~~~^~~
foo.cc:25:23: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   25 |   if(((i%100==0&&i&400==0)||i%4==0)&&i==2) sum+=num[0];
      |                    ~~~^~~
foo.cc:30:23: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   30 |   if(((m%100==0&&m&400==0)||m%4==0)&&m==2) sum+=(num[0]-d+d2);
      |                    ~~~^~~

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