View Compilation Error

0_0_26262273_14678.cpp: In function 'int main()':
0_0_26262273_14678.cpp:12:9: error: 'll' was not declared in this scope
         ll ans;
         ^
0_0_26262273_14678.cpp:14:16: error: expected ';' before 'a'
             ll a,b;
                ^
0_0_26262273_14678.cpp:15:18: error: 'a' was not declared in this scope
             cin>>a>>b;
                  ^
0_0_26262273_14678.cpp:15:21: error: 'b' was not declared in this scope
             cin>>a>>b;
                     ^
0_0_26262273_14678.cpp:16:13: error: 'ans' was not declared in this scope
             ans+= a*b;
             ^
0_0_26262273_14678.cpp:18:15: error: 'ans' was not declared in this scope
         cout<<ans<<endl;
               ^