/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:19:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   19 |         for(int i=1;i<m;i++)
      |         ^~~
/in/foo.cc:21:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   21 |                 sum+=d;
      |                 ^~~