View Compilation Error

In file included from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/cassert:44,
                 from 0_0_39434107_22146.cpp:67:
0_0_39434107_22146.cpp: In function 'void solve()':
0_0_39434107_22146.cpp:415:20: error: 'lsr' was not declared in this scope; did you mean 'lst'?
  415 |             assert(lsr <= cur);
      |                    ^~~