View Compilation Error

0_0_34093049_26074.cpp:16:7: error: 'll' does not name a type
 const ll lnf=0x3f3f3f3f3f3f3f3f;
       ^
0_0_34093049_26074.cpp: In function 'std::vector<int> sol(int, int)':
0_0_34093049_26074.cpp:131:12: error: 'class std::vector<int>' has no member named 'pb'
         vc.pb(c[l]);
            ^
0_0_34093049_26074.cpp:132:12: error: 'class std::vector<int>' has no member named 'pb'
         vc.pb(b[l]);
            ^
0_0_34093049_26074.cpp:136:24: error: 'tmid' was not declared in this scope
     return dontt(sol(l,tmid),sol(tmid+1,r));
                        ^