/in/foo.cc: In function 'int main()':
/in/foo.cc:13:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(int i=2;i<=n;i++)
  ^~~
/in/foo.cc:16:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   cout<<f[n][1]<<' '<<sum[n]-f[n][1]<<endl;
   ^~~~