/in/foo.cc: In function 'int main()':
/in/foo.cc:38:31: error: 'cnt' was not declared in this scope; did you mean 'int'?
   38 |                         ans++;cnt+=i;
      |                               ^~~
      |                               int
/in/foo.cc:39:28: error: 'cnt' was not declared in this scope; did you mean 'int'?
   39 |         } cout<<ans<<'\n'<<cnt;
      |                            ^~~
      |                            int
/in/foo.cc:34:22: warning: unused variable 'sum' [-Wunused-variable]
   34 |         ll l,r,ans=0,sum=0;
      |                      ^~~