/in/foo.cc: In function 'int main()':
/in/foo.cc:7:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for (int i=1;i<=n;i++)cin>>a[i];ans=1;
  ^~~
/in/foo.cc:7:34: 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>>a[i];ans=1;
                                  ^~~