Find using QRCode in the page at http://sweet.ua.pt/jpbarraca/course/aev-2122/main/.
![Captura de ecra](https://user-images.githubusercontent.com/17878072/146472419-c1dd977b-f6a1-4565-8c1a-0600f99d4c01.png)
This QRCode contains the following string `2zxl4DOhFTegVjpwL3a1IvjrgSTgXxJI57`. Convert this string from Base62 and obtain the flag.
## Flag
CTFUA{os1nt_1n_a3v_class}