/in/foo.cc: In function 'int leap(int)':
/in/foo.cc:11:18: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   11 |         if(y%4==0&&y%100!=0||y%400!=0)
      |            ~~~~~~^~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:21:15: error: 'cnt' was not declared in this scope; did you mean 'int'?
   21 |         cout<<cnt;
      |               ^~~
      |               int