View Compilation Error

0_0_38514306_17419.cpp: In member function 'void directed_mst<Cost>::push(int)':
0_0_38514306_17419.cpp:96:30: error: expected ')' before ';' token
         if (auto l = left_[u]; ~l) lazy_[l] += lazy_[u];
                              ^
0_0_38514306_17419.cpp:96:33: error: 'l' was not declared in this scope
         if (auto l = left_[u]; ~l) lazy_[l] += lazy_[u];
                                 ^
0_0_38514306_17419.cpp:97:31: error: expected ')' before ';' token
         if (auto r = right_[u]; ~r) lazy_[r] += lazy_[u];
                               ^
0_0_38514306_17419.cpp:97:34: error: 'r' was not declared in this scope
         if (auto r = right_[u]; ~r) lazy_[r] += lazy_[u];
                                  ^