foo.cc: In function 'int main()':
foo.cc:37:25: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if((a%400==0 || a%4==0 && a%100!=0)&&(b>2))
                  ~~~~~~~^~~~~~~~~~~
foo.cc:47:11: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<s<<" "<<d;
           ^~~

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