View Compilation Error

0_0_22354579_10333.cpp: In member function 'void SAM::Tsort(const string&, int)':
0_0_22354579_10333.cpp:53:9: error: 'll' was not declared in this scope
         ll ans=0;
         ^
0_0_22354579_10333.cpp:60:17: error: 'ans' was not declared in this scope
                 ans+=val[u]-val[pre[u]];
                 ^
0_0_22354579_10333.cpp:63:25: error: 'ans' was not declared in this scope
         printf("%lld\n",ans);
                         ^