/in/foo.cc: In function 'int main()':
/in/foo.cc:49:24: error: expected primary-expression before '?' token
   49 |         dist[0][A][B] <?= L;
      |                        ^
/in/foo.cc:49:25: error: expected primary-expression before '=' token
   49 |         dist[0][A][B] <?= L;
      |                         ^
/in/foo.cc:49:28: error: expected ':' before ';' token
   49 |         dist[0][A][B] <?= L;
      |                            ^
      |                            :
/in/foo.cc:49:28: error: expected primary-expression before ';' token
/in/foo.cc:50:24: error: expected primary-expression before '?' token
   50 |         dist[0][B][A] <?= L;
      |                        ^
/in/foo.cc:50:25: error: expected primary-expression before '=' token
   50 |         dist[0][B][A] <?= L;
      |                         ^
/in/foo.cc:50:28: error: expected ':' before ';' token
   50 |         dist[0][B][A] <?= L;
      |                            ^
      |                            :
/in/foo.cc:50:28: error: expected primary-expression before ';' token