/in/foo.cc: In function 'int main()':
/in/foo.cc:12:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(int i=1;i<=n;i++) cin>>k[i];a
  ^~~
/in/foo.cc:12:34: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  for(int i=1;i<=n;i++) cin>>k[i];a
                                  ^
/in/foo.cc:12:34: error: 'a' was not declared in this scope