/in/foo.cc: In function 'int main()':
/in/foo.cc:15:15: warning: 'maxa' may be used uninitialized [-Wmaybe-uninitialized]
   15 |         cout<<maxa;
      |               ^~~~
/in/foo.cc:5:15: note: 'maxa' was declared here
    5 |         int n,maxa,a;
      |               ^~~~