View Compilation Error

0_0_33815065_24282.cpp: In function 'long long int quick_pow(long long int, long long int)':
0_0_33815065_24282.cpp:15:4: error: 'll' was not declared in this scope
    ll ans=1;
    ^
0_0_33815065_24282.cpp:19:16: error: 'ans' was not declared in this scope
         if(b&1)ans=(ll)(ans*a)%mod;
                ^
0_0_33815065_24282.cpp:23:12: error: 'ans' was not declared in this scope
     return ans;
            ^