/in/foo.cc: In function 'int main()':
/in/foo.cc:10:10: warning: 's' is used uninitialized [-Wuninitialized]
   10 |         s+=!(h[i]>n);
      |         ~^~~~~~~~~~~
/in/foo.cc:5:11: note: 's' was declared here
    5 |     int n,s;
      |           ^