View Compilation Error

0_0_29857664_6344.cpp: In function 'int main()':
0_0_29857664_6344.cpp:19:9: error: 'LL' was not declared in this scope
         LL ans=1,x;
         ^
0_0_29857664_6344.cpp:21:18: error: 'x' was not declared in this scope
             cin>>x;
                  ^
0_0_29857664_6344.cpp:22:13: error: 'ans' was not declared in this scope
             ans=lcm(ans,x);
             ^
0_0_29857664_6344.cpp:24:15: error: 'ans' was not declared in this scope
         cout<<ans-a<<endl;
               ^