/in/foo.cc: In function 'int main()':
/in/foo.cc:14:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int i=0;i<n;i++)
     ^~~
/in/foo.cc:16:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  for(int i=0;i<n;i++)
  ^~~
/in/foo.cc:7:14: warning: unused variable 'q' [-Wunused-variable]
  int n,ans=0,q,w;
              ^
/in/foo.cc:7:16: warning: unused variable 'w' [-Wunused-variable]
  int n,ans=0,q,w;
                ^