Is there a mistake in the original code on the right hand side? I get:

  card.cpp:16:2: error: ‘g’ was not declared in this scope
     16 | <g;p)t=p,n=v(0,0,1),m=1;for(i k=19;k--;)
        |  ^

Edit: Yes there is. The ‘<g;’ seems like it should have been the single character ‘<’, perhaps a corrupted HTML escape.