Just a simple calculator application. Nothing suspicious to see here!

There’s two challenges here that each yield their own flag. Both challenges have the same source code, but one challenge has a different compiler option enabled. Can you guess which one?

The challenge repository is linked here. To solve remotely, connect to the TCP servers.

simplecalc0 is at nc server.cerne.xyz 1337 and simplecalc1 is at nc server.cerne.xyz 1338