foo.cc: In function 'int main()':
foo.cc:20:18: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   20 |         if(y%4==0&&y%100!=0||y%400==0)
      |            ~~~~~~^~~~~~~~~~
foo.cc:20:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   20 |         if(y%4==0&&y%100!=0||y%400==0)
      |         ^~
foo.cc:22:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   22 |                 cout<<leap+d<<endl;
      |                 ^~~~
foo.cc:4:13: warning: unused variable 'i' [-Wunused-variable]
    4 |         int i=0,y,m,d,leap=0;
      |             ^

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