/in/foo.cc: In function 'int main()':
/in/foo.cc:8:19: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    8 |         if(y%4==0 && y%100!=0 || y%400==0){
      |            ~~~~~~~^~~~~~~~~~~
/in/foo.cc:15:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   15 |         if(d = a[m]){
      |            ~~^~~~~~