/in/foo.cc: In function 'int main()':
/in/foo.cc:20:19: warning: 'b' may be used uninitialized [-Wmaybe-uninitialized]
   20 |     cout<<aa%d*10+b;
      |                   ^
/in/foo.cc:10:17: note: 'b' was declared here
   10 |     long long a,b,aa,cnt=0,d;
      |                 ^